JEE_papers/JSON/JEE_2015_2.jsonl

{"id": 1, "question": "A large spherical mass M is fixed at one position and two identical point masses m are kept on a line passing through the centre of M (see figure). The point masses are connected by a rigid massless rod of length l and this assembly is free to move along the line connecting them. All three masses interact only through their mutual gravitational interaction. When the point mass nearer to M is at a distance r = 3l from M, the tension in the rod is zero for m = k (M/238). The value of k is", "response_choices": "Single digit integer ranging from 0 to 9", "answer": "7", "page_number": 2, "image_available": "yes", "question_subject": "physics"}
{"id": 2, "question": "The energy of a system as a function of time t is given as E(t) = A^2 exp(-\u03b1t), where \u03b1 = 0.2 s^-1. The measurement of A has an error of 1.25%. If the error in the measurement of time is 1.50%, the percentage error in the value of E(t) at t = 5 s is", "response_choices": "Single digit integer ranging from 0 to 9", "answer": "4", "page_number": 2, "image_available": "no", "question_subject": "physics"}
{"id": 3, "question": "The densities of two solid spheres A and B of the same radii R vary with radial distance r as \u03c1A(r) = k (R/r) and \u03c1B(r) = k (R/r)^5, respectively, where k is a constant. The moments of inertia of the individual spheres about axes passing through their centres are IA and IB, respectively. If IB = n/10 IA, the value of n is", "response_choices": "Single digit integer ranging from 0 to 9", "answer": "6", "page_number": 2, "image_available": "no", "question_subject": "physics"}
{"id": 4, "question": "Four harmonic waves of equal frequencies and equal intensities I0 have phase angles 0, \u03c0/3, 2\u03c0/3 and \u03c0. When they are superposed, the intensity of the resulting wave is nI0. The value of n is", "response_choices": "", "answer": "3", "page_number": 3, "image_available": "no", "question_subject": "physics"}
{"id": 5, "question": "For a radioactive material, its activity A and rate of change of its activity R are defined as A = dN/dt and R = dA/dt, where N(t) is the number of nuclei at time t. Two radioactive sources P (mean life \u03c4) and Q (mean life 2\u03c4) have the same activity at t = 0. Their rates of change of activities at t = 2\u03c4 are Rp and Rq, respectively. If Rp = n, then the value of n is Rq", "response_choices": "", "answer": "2", "page_number": 3, "image_available": "no", "question_subject": "physics"}
{"id": 6, "question": "A monochromatic beam of light is incident at 60\u00b0 on one face of an equilateral prism of refractive index n and emerges from the opposite face making an angle \u03b8(n) with the normal (see the figure). For n = \u221a3 the value of \u03b8 is 60\u00b0 and d\u03b8/dn = m. The value of m is", "response_choices": "", "answer": "2", "page_number": 3, "image_available": "yes", "question_subject": "physics"}
{"id": 7, "question": "In the following circuit, the current through the resistor R (= 2\u03a9) is I Amperes. The value of I is", "response_choices": "No response choices provided", "answer": "1", "page_number": 4, "image_available": "yes", "question_subject": "physics"}
{"id": 8, "question": "An electron in an excited state of Li\u00b2+ ion has angular momentum 3\u210f/2\u03c0 . The de Broglie wavelength of the electron in this state is p \u03c0a\u2080 (where a\u2080 is the Bohr radius). The value of p is", "response_choices": "No response choices provided", "answer": "2", "page_number": 4, "image_available": "no", "question_subject": "physics"}
{"id": 9, "question": "Two spheres P and Q of equal radii have densities \u03c1\u2081 and \u03c1\u2082, respectively. The spheres are connected by a massless string and placed in liquids L\u2081 and L\u2082 of densities \u03c3\u2081 and \u03c3\u2082 and viscosities \u03b7\u2081 and \u03b7\u2082, respectively. They float in equilibrium with the sphere P in L\u2081 and sphere Q in L\u2082 and the string being taut (see figure). If sphere P alone in L\u2082 has terminal velocity V\u0305p and Q alone in L\u2081 has terminal velocity V\u0305q, then", "response_choices": "(A) |V\u0305p| = \u03b7\u2081 / |V\u0305q| \u03b7\u2082, (B) |V\u0305p| = \u03b7\u2082 / |V\u0305q| \u03b7\u2081, (C) V\u0305p\u22c5V\u0305q > 0, (D) V\u0305p\u22c5V\u0305q < 0", "answer": "(A) and (D)", "page_number": 5, "image_available": "yes", "question_subject": "physics"}
{"id": 10, "question": "In terms of potential difference V, electric current I, permittivity \u03b5\u2080, permeability \u03bc\u2080 and speed of light c, the dimensionally correct equation(s) is(are)", "response_choices": "(A) \u03bc\u2080I\u00b2 = \u03b5\u2080V\u2074, (B) \u03b5\u2080I = \u03bc\u2080V, (C) I = \u03b5\u2080cV, (D) \u03bc\u2080cI = \u03b5\u2080V", "answer": "(A) and (C)", "page_number": 5, "image_available": "no", "question_subject": "physics"}
{"id": 11, "question": "Consider a uniform spherical charge distribution of radius R2 centred at the origin O. In this distribution, a spherical cavity of radius R1, centred at P with distance OP=a=R2-R1 (see figure) is made. If the electric field inside the cavity at position r\u0304 is \u0112(r\u0304), then the correct statement(s) is(are)", "response_choices": "(A) \u0112 is uniform, its magnitude is independent of R2 but its direction depends on r\u0304\n(B) \u0112 is uniform, its magnitude depends on R2 and its direction depends on r\u0304\n(C) \u0112 is uniform, its magnitude is independent of a but its direction depends on \u0101\n(D) \u0112 is uniform and both its magnitude and direction depend on \u0101", "answer": "(D)", "page_number": 6, "image_available": "yes", "question_subject": "physics"}
{"id": 12, "question": "In plotting stress versus strain curves for two materials P and Q, a student by mistake puts strain on the y-axis and stress on the x-axis as shown in the figure. Then the correct statement(s) is(are)", "response_choices": "(A) P has more tensile strength than Q\n(B) P is more ductile than Q\n(C) P is more brittle than Q\n(D) The Young's modulus of P is more than that of Q", "answer": "(A) and (B)", "page_number": 7, "image_available": "yes", "question_subject": "physics"}
{"id": 13, "question": "A spherical body of radius R consists of a fluid of constant density and is in equilibrium under its own gravity. If P(r) is the pressure at r(r < R), then the correct option(s) is(are)", "response_choices": "(A) P(r = 0) = 0, (B) P(r = 3R/4) / P(r = 2R/3) = 63 / 80, (C) P(r = 3R/5) / P(r = 2R/5) = 16 / 21, (D) P(r = R/2) / P(r = R/3) = 20 / 27", "answer": "(B) and (C)", "page_number": 8, "image_available": "no", "question_subject": "physics"}
{"id": 14, "question": "A parallel plate capacitor having plates of area S and plate separation d, has capacitance C1 in air. When two dielectrics of different relative permittivities (\u03b51 = 2 and \u03b52 = 4) are introduced between the two plates as shown in the figure, the capacitance becomes C2. The ratio C2/C1 is", "response_choices": "(A) 6/5, (B) 5/3, (C) 7/5, (D) 7/3", "answer": "(D)", "page_number": 8, "image_available": "yes", "question_subject": "physics"}
{"id": 15, "question": "An ideal monoatomic gas is confined in a horizontal cylinder by a spring loaded piston (as shown in the figure). Initially the gas is at temperature T1, pressure P1 and volume V1 and the spring is in its relaxed state. The gas is then heated very slowly to temperature T2, pressure P2 and volume V2. During this process the piston moves out by a distance x. Ignoring the friction between the piston and the cylinder, the correct statement(s) is(are)", "response_choices": "(A) If V2 = 2V1 and T2 = 3T1, then the energy stored in the spring is 1/4 P1V1\n(B) If V2 = 2V1 and T2 = 3T1, then the change in internal energy is 3P1V1\n(C) If V2 = 3V1 and T2 = 4T1, then the work done by the gas is 7/3 P1V1\n(D) If V2 = 3V1 and T2 = 4T1, then the heat supplied to the gas is 17/6 P1V1", "answer": "(A), (B) and (C)", "page_number": 9, "image_available": "yes", "question_subject": "physics"}
{"id": 16, "question": "A fission reaction is given by 236U \u2192 140Xe + 94Sr + x + y, where x and y are two particles. Considering 236U to be at rest, the kinetic energies of the products are denoted by Kxe, Ksr, Kx (2 MeV) and Ky (2 MeV), respectively. Let the binding energies per nucleon of 236U, 140Xe and 94Sr be 7.5 MeV, 8.5 MeV and 8.5 MeV, respectively. Considering different conservation laws, the correct option(s) is(are)", "response_choices": "(A) x = n, y = n, Ksr = 129 MeV, Kxe = 86 MeV\n(B) x = p, y = e-, Ksr = 129 MeV, Kxe = 86 MeV\n(C) x = p, y = n, Ksr = 129 MeV, Kxe = 86 MeV\n(D) x = n, y = n, Ksr = 86 MeV, Kxe = 129 MeV", "answer": "A", "page_number": 10, "image_available": "no", "question_subject": "physics"}
{"id": 1, "question": "This section contains TWO paragraphs", "response_choices": "", "answer": "", "page_number": 11, "image_available": "no", "question_subject": "physics"}
{"id": 2, "question": "Based on each paragraph, there will be TWO questions", "response_choices": "", "answer": "", "page_number": 11, "image_available": "no", "question_subject": "physics"}
{"id": 3, "question": "Each question has FOUR options (A), (B), (C) and (D). ONE OR MORE THAN ONE of these four option(s) is(are) correct", "response_choices": "", "answer": "", "page_number": 11, "image_available": "no", "question_subject": "physics"}
{"id": 4, "question": "For each question, darken the bubble(s) corresponding to all the correct option(s) in the ORS", "response_choices": "", "answer": "", "page_number": 11, "image_available": "no", "question_subject": "physics"}
{"id": 5, "question": "Marking scheme : +4 If only the bubble(s) corresponding to all the correct option(s) is(are) darkened, 0 If none of the bubbles is darkened, -2 In all other cases", "response_choices": "", "answer": "", "page_number": 11, "image_available": "no", "question_subject": "physics"}
{"id": 17, "question": "Consider two different metallic strips (1 and 2) of the same material. Their lengths are the same, widths are w1 and w2 and thicknesses are d1 and d2, respectively. Two points K and M are symmetrically located on the opposite faces parallel to the x-y plane (see figure). V1 and V2 are the potential differences between K and M in strips 1 and 2, respectively. Then, for a given current I flowing through them in a given magnetic field strength B, the correct statement(s) is(are)", "response_choices": "(A) If w1 = w2 and d1 = 2d2, then V2 = 2V1\n(B) If w1 = w2 and d1 = 2d2, then V2 = V1\n(C) If w1 = 2w2 and d1 = d2, then V2 = 2V1\n(D) If w1 = 2w2 and d1 = d2, then V2 = V1", "answer": "(A) and (D)", "page_number": 12, "image_available": "yes", "question_subject": "physics"}
{"id": 18, "question": "Consider two different metallic strips (1 and 2) of same dimensions (length l, width w and thickness d) with carrier densities n1 and n2, respectively. Strip 1 is placed in magnetic field B1 and strip 2 is placed in magnetic field B2, both along positive y-directions. Then V1 and V2 are the potential differences developed between K and M in strips 1 and 2, respectively. Assuming that the current I is the same for both the strips, the correct option(s) is(are)", "response_choices": "(A) If B1 = B2 and n1 = 2n2, then V2 = 2V1\n(B) If B1 = B2 and n1 = 2n2, then V2 = V1\n(C) If B1 = 2B2 and n1 = n2, then V2 = 0.5V1\n(D) If B1 = 2B2 and n1 = n2, then V2 = V1", "answer": "(A) and (C)", "page_number": 12, "image_available": "no", "question_subject": "physics"}
{"id": 19, "question": "For two structures namely S1 with n1 = \u221a45/4 and n2 = 3/2, and S2 with n1 = 8/5 and n2 = 7/5 and taking the refractive index of water to be 4/3 and that of air to be 1, the correct option(s) is(are)", "response_choices": "(A) NA of S1 immersed in water is the same as that of S2 immersed in a liquid of refractive index 16/3\u221a15, (B) NA of S1 immersed in liquid of refractive index 6/\u221a15 is the same as that of S2 immersed in water, (C) NA of S1 placed in air is the same as that of S2 immersed in liquid of refractive index 4/\u221a15, (D) NA of S1 placed in air is the same as that of S2 placed in water", "answer": "(A) and (C)", "page_number": 13, "image_available": "yes", "question_subject": "physics"}
{"id": 20, "question": "If two structures of same cross-sectional area, but different numerical apertures NA1 and NA2 (NA2 < NA1) are joined longitudinally, the numerical aperture of the combined structure is", "response_choices": "(A) NA1 NA2 / (NA1 + NA2), (B) NA1 + NA2, (C) NA1, (D) NA2", "answer": "(D)", "page_number": 13, "image_available": "no", "question_subject": "physics"}
{"id": 21, "question": "The number of hydroxyl group(s) in Q is", "response_choices": "Single digit integer ranging from 0 to 9", "answer": "4", "page_number": 14, "image_available": "yes", "question_subject": "chemistry"}
{"id": 22, "question": "Among the following, the number of reaction(s) that produce(s) benzaldehyde is", "response_choices": "I. CO, HCl; II. CHCl2, H2O; III. COCl, H2; IV. CO2Me, DIBAL-H", "answer": "4", "page_number": 14, "image_available": "yes", "question_subject": "chemistry"}
{"id": 23, "question": "In the complex acetylbromidodicarbonylbis(triethylphosphine)iron(II), the number of Fe-C bond(s) is", "response_choices": "Single digit integer ranging from 0 to 9", "answer": "3", "page_number": 14, "image_available": "no", "question_subject": "chemistry"}
{"id": 24, "question": "Among the complex ions, [Co(NH\u2083)\u2082CH\u2083-CH\u2082-NH\u2082)\u2082Cl\u2082]+, [CrCl\u2084(C\u2082O\u2084)\u2082]\u00b3\u207b, [Fe(H\u2082O)\u2084(OH)\u2082]+, [Fe(NH\u2083)\u2086(CN)\u2086]\u00b3+ and [Co(NH\u2083)\u2084(H\u2082O)Cl]\u00b2\u207a, the number of complex ion(s) that show(s) cis-trans isomerism is", "response_choices": "", "answer": "6", "page_number": 15, "image_available": "no", "question_subject": "chemistry"}
{"id": 25, "question": "Three moles of B\u2082H\u2086 are completely reacted with methanol. The number of moles of boron containing product formed is", "response_choices": "", "answer": "6", "page_number": 15, "image_available": "no", "question_subject": "chemistry"}
{"id": 26, "question": "The molar conductivity of a solution of a weak acid HX (0.01 M) is 10 times smaller than the molar conductivity of a solution of a weak acid HY (0.10 M). If \u03bb\u00b0m \u2248 \u03bb\u00b0c , the difference in their pK\u200ba values, pK\u200ba(HX) - pK\u200ba(HY), is (consider degree of ionization of both acids to be \u226a 1)", "response_choices": "", "answer": "3", "page_number": 15, "image_available": "no", "question_subject": "chemistry"}
{"id": 27, "question": "A closed vessel with rigid walls contains 1 mol of \u00b2\u00b3\u2078U and 1 mol of air at 298 K. Considering complete decay of \u00b2\u00b3\u2078U to \u00b2\u2070\u2076Pb, the ratio of the final pressure to the initial pressure of the system at 298 K is", "response_choices": "", "answer": "9", "page_number": 15, "image_available": "no", "question_subject": "chemistry"}
{"id": 28, "question": "In dilute aqueous H\u2082SO\u2084, the complex diaquodioxalatoferrate(II) is oxidized by MnO\u2084\u207b. For this reaction, the ratio of the rate of change of [H\u207a] to the rate of change of [MnO\u2084\u207b] is", "response_choices": "", "answer": "8", "page_number": 15, "image_available": "no", "question_subject": "chemistry"}
{"id": 29, "question": "In the following reactions, the product S is", "response_choices": "(A) [chemical structure] (B) [chemical structure] (C) [chemical structure] (D) [chemical structure]", "answer": "A", "page_number": 16, "image_available": "yes", "question_subject": "chemistry"}
{"id": 30, "question": "The major product U in the following reactions is", "response_choices": "(A) [chemical structure] (B) [chemical structure] (C) [chemical structure] (D) [chemical structure]", "answer": "B", "page_number": 16, "image_available": "yes", "question_subject": "chemistry"}
{"id": 31, "question": "In the following reactions, the major product W is", "response_choices": "(A) (B) (C) (D)", "answer": "(A)", "page_number": 17, "image_available": "yes", "question_subject": "chemistry"}
{"id": 32, "question": "The correct statement(s) regarding, (i) HClO, (ii) HClO2, (iii) HClO3 and (iv) HClO4, is(are)", "response_choices": "(A) The number of Cl=O bonds in (ii) and (iii) together is two (B) The number of lone pairs of electrons on Cl in (ii) and (iii) together is three (C) The hybridization of Cl in (iv) is sp3 (D) Amongst (i) to (iv), the strongest acid is (i)", "answer": "(B) and (C)", "page_number": 17, "image_available": "no", "question_subject": "chemistry"}
{"id": 33, "question": "The pair(s) of ions where BOTH the ions are precipitated upon passing H2S gas in presence of dilute HCl, is(are)", "response_choices": "(A) Ba2+, Zn2+ (B) Bi3+, Fe3+ (C) Cu2+, Pb2+ (D) Hg2+, Bi3+", "answer": "(C) and (D)", "page_number": 17, "image_available": "no", "question_subject": "chemistry"}
{"id": 34, "question": "Under hydrolytic conditions, the compounds used for preparation of linear polymer and for chain termination, respectively, are", "response_choices": "(A) CH3SiCl3 and Si(CH3)4 (B) (CH3)2SiCl2 and (CH3)3SiCl (C) (CH3)2SiCl2 and CH3SiCl3 (D) SiCl4 and (CH3)3SiCl", "answer": "(B)", "page_number": 18, "image_available": "no", "question_subject": "chemistry"}
{"id": 35, "question": "When O2 is adsorbed on a metallic surface, electron transfer occurs from the metal to O2. The TRUE statement(s) regarding this adsorption is(are)", "response_choices": "(A) O2 is physi\u00adsorbed (B) heat is released (C) occupancy of \u03c02p of O2 is increased (D) bond length of O2 is increased", "answer": "(B), (C) and (D)", "page_number": 18, "image_available": "no", "question_subject": "chemistry"}
{"id": 36, "question": "One mole of a monoatomic real gas satisfies the equation pV\u2212b=RT where b is a constant. The relationship of interatomic potential V(r) and interatomic distance r for the gas is given by", "response_choices": "(A) (B) (C) (D)", "answer": "(C)", "page_number": 18, "image_available": "yes", "question_subject": "chemistry"}
{"id": 37, "question": "Compound X is", "response_choices": "(A) [Toluene structure], (B) [Cresol structure], (C) [Benzyl alcohol structure], (D) [Benzaldehyde structure]", "answer": "(C)", "page_number": 19, "image_available": "yes", "question_subject": "chemistry"}
{"id": 38, "question": "The major compound Y is", "response_choices": "(A) [Ethylbenzene structure], (B) [Isopropylbenzene structure], (C) [Cumene structure], (D) [Diethylbenzene structure]", "answer": "(D)", "page_number": 19, "image_available": "yes", "question_subject": "chemistry"}
{"id": 39, "question": "Enthalpy of dissociation (in kJ mol^-1) of acetic acid obtained from the Expt. 2 is", "response_choices": "(A) 1.0 (B) 10.0 (C) 24.5 (D) 51.4", "answer": "(A)", "page_number": 20, "image_available": "no", "question_subject": "chemistry"}
{"id": 40, "question": "The pH of the solution after Expt. 2 is", "response_choices": "(A) 2.8 (B) 4.7 (C) 5.0 (D) 7.0", "answer": "(B)", "page_number": 20, "image_available": "no", "question_subject": "chemistry"}
{"id": 41, "question": "For any integer k, let \u03b1k = cos(k\u03c0/7) + i sin(k\u03c0/7), where i = \u221a-1. The value of the expression (\u03a3|\u03b1k+1 - \u03b1k|)/(\u03a3|\u03b1k+1 - \u03b1k-2|) is", "response_choices": "Options not provided (Integer answer expected)", "answer": "4", "page_number": 21, "image_available": "no", "question_subject": "mathematics"}
{"id": 42, "question": "Suppose that all the terms of an arithmetic progression (A.P.) are natural numbers. If the ratio of the sum of the first seven terms to the sum of the first eleven terms is 6 : 11 and the seventh term lies in between 130 and 140, then the common difference of this A.P. is", "response_choices": "Options not provided (Integer answer expected)", "answer": "9", "page_number": 21, "image_available": "no", "question_subject": "mathematics"}
{"id": 43, "question": "The coefficient of x^9 in the expansion of (1 + x)(1 + x^2)(1 + x^3) ... (1 + x^100) is", "response_choices": "Options not provided (Integer answer expected)", "answer": "8", "page_number": 21, "image_available": "no", "question_subject": "mathematics"}
{"id": 44, "question": "Suppose that the foci of the ellipse (x^2/9) + (y^2/5) = 1 are (f1, 0) and (f2, 0) where f1 > 0 and f2 < 0. Let P1 and P2 be two parabolas with a common vertex at (0, 0) and with foci at (f1, 0) and (2f2, 0), respectively. Let T1 be a tangent to P2 which passes through (2f2, 0) and T2 be a tangent to P2 which passes through (f1, 0). If m1 is the slope of T1 and m2 is the slope of T2, then the value of (1/m1^2 + m2^2) is", "response_choices": "No multiple choice options given", "answer": "4", "page_number": 22, "image_available": "no", "question_subject": "mathematics"}
{"id": 45, "question": "Let m and n be two positive integers greater than 1. If lim(a->0)((e^(a(e^r) - e^r))/(a^m)) = (e^r/2), then the value of m/n is", "response_choices": "No multiple choice options given", "answer": "2", "page_number": 22, "image_available": "no", "question_subject": "mathematics"}
{"id": 46, "question": "If \u03b1 = \u222b(e^(8x+3tan^-1x)*(12+9x^2))/(1+x^2) dx where tan^-1 x takes only principal values, then the value of [log(e)(1+\u03b1)-(3\u03c0/4)] is", "response_choices": "No multiple choice options given", "answer": "9", "page_number": 22, "image_available": "no", "question_subject": "mathematics"}
{"id": 47, "question": "Let f : R \u2192 R be a continuous odd function, which vanishes exactly at one point and f(t) = 1/2. Suppose that F(x)= \u222bf(t) dt for all x \u2208 [-1, 2] and G(x)= \u222b|f(f(t))| dt for all x \u2208 [-1, 2]. If lim F(x)/G(x) = 1/14, then the value of f(1/2) is", "response_choices": "No multiple choice options provided", "answer": "7", "page_number": 23, "image_available": "no", "question_subject": "mathematics"}
{"id": 48, "question": "Suppose that p\u0302, q\u0302 and r\u0302 are three non-coplanar vectors in R\u00b3. Let the components of a vector \u015d along p\u0302, q\u0302 and r\u0302 be 4, 3 and 5, respectively. If the components of this vector \u015d along (-p\u0302+q\u0302+r\u0302), (p\u0302-q\u0302+r\u0302) and (-p\u0302-q\u0302+r\u0302) are x, y and z, respectively, then the value of 2x+y+z is", "response_choices": "No multiple choice options provided", "answer": "9", "page_number": 23, "image_available": "no", "question_subject": "mathematics"}
{"id": 49, "question": "Let S be the set of all non-zero real numbers \u03b1 such that the quadratic equation \u03b1x^2 - x + \u03b1 = 0 has two distinct real roots x1 and x2 satisfying the inequality |x1 - x2| < 1. Which of the following intervals is(are) a subset(s) of S?", "response_choices": "(A) (-1/2, -1/\u221a5), (B) (-1/\u221a5, 0), (C) (0, 1/\u221a5), (D) (1/\u221a5, 1/2)", "answer": "(A) and (D)", "page_number": 24, "image_available": "no", "question_subject": "mathematics"}
{"id": 50, "question": "If \u03b1 = 3sin^-1(6/11) and \u03b2 = 3cos^-1(4/9), where the inverse trigonometric functions take only the principal values, then the correct option(s) is(are)", "response_choices": "(A) cos \u03b2 > 0, (B) sin \u03b2 < 0, (C) cos(\u03b1 + \u03b2) > 0, (D) cos \u03b1 < 0", "answer": "(B), (C) and (D)", "page_number": 24, "image_available": "no", "question_subject": "mathematics"}
{"id": 51, "question": "Let E\u2081 and E\u2082 be two ellipses whose centers are at the origin. The major axes of E\u2081 and E\u2082 lie along the x-axis and the y-axis, respectively. Let S be the circle x\u00b2 + (y - 1)\u00b2 = 2. The straight line x + y = 3 touches the curves S, E\u2081 and E\u2082 at P, Q and R, respectively. Suppose that PQ = PR = 2\u221a2/3 . If e\u2081 and e\u2082 are the eccentricities of E\u2081 and E\u2082, respectively, then the correct expression(s) is(are)", "response_choices": "(A) e\u2081\u00b2 + e\u2082\u00b2 = 43/40 (B) e\u2081e\u2082 = \u221a7/2\u221a10 (C) |e\u2081\u00b2 - e\u2082\u00b2| = 5/8 (D) e\u2081e\u2082 = \u221a3/4", "answer": "(A) and (B)", "page_number": 25, "image_available": "no", "question_subject": "mathematics"}
{"id": 52, "question": "Consider the hyperbola H : x\u00b2 - y\u00b2 = 1 and a circle S with center N(x\u2082, 0). Suppose that H and S touch each other at a point P(x\u2081, y\u2081) with x\u2081 > 1 and y\u2081 > 0. The common tangent to H and S at P intersects the x-axis at point M. If (l, m) is the centroid of the triangle \u0394PMN, then the correct expression(s) is(are)", "response_choices": "(A) dl/dx\u2081 = 1 - 1/3x\u2081 for x\u2081 > 1 (B) dm/dx\u2081 = x\u2081/\u221a(x\u2081\u00b2 - 1) for x\u2081 > 1 (C) dl/dx\u2081 = 1 + 1/3x\u2081 for x\u2081 > 1 (D) dm/dy\u2081 = 1/3 for y\u2081 > 0", "answer": "(A), (B) and (D)", "page_number": 25, "image_available": "no", "question_subject": "mathematics"}
{"id": 53, "question": "The option(s) with the values of a and L that satisfy the following equation is(are) [equation 1] = L? [equation 2]", "response_choices": "(A) a = 2, L = e^(4\u03c0 - 1)/(e^\u03c0 - 1) (B) a = 2, L = e^(4\u03c0 + 1)/(e^\u03c0 + 1) (C) a = 4, L = e^(4\u03c0 - 1)/(e^\u03c0 - 1) (D) a = 4, L = e^(4\u03c0 + 1)/(e^\u03c0 + 1)", "answer": "(A) and (C)", "page_number": 26, "image_available": "no", "question_subject": "mathematics"}
{"id": 54, "question": "Let f,g:[-1,2] \u2192 R be continuous functions which are twice differentiable on the interval (-1,2). Let the values of f and g at the points -1, 0 and 2 be as given in the following table: [table with values]. In each of the intervals (-1,0) and (0,2) the function (f-3g)^' never vanishes. Then the correct statement(s) is(are)", "response_choices": "(A) f'(x)-3g'(x)=0 has exactly three solutions in (-1,0) U (0,2) (B) f'(x)-3g'(x)=0 has exactly one solution in (-1,0) (C) f'(x)-3g'(x)=0 has exactly one solution in (0,2) (D) f'(x)-3g'(x)=0 has exactly two solutions in (-1,0) and exactly two solutions in (0,2)", "answer": "(B) and (C)", "page_number": 26, "image_available": "no", "question_subject": "mathematics"}
{"id": 55, "question": "Let f(x) = 7 tan^8 x + 7 tan^6 x - 3 tan^4 x - 3 tan^2 x for all x \u2208 (- \u03c0/2, \u03c0/2). Then the correct expression(s) is(are)", "response_choices": "(A) \u222b^(\u03c0/4)_0 x f(x) dx = 1/12, (B) \u222b^(\u03c0/4)_0 f(x) dx = 0, (C) \u222b^(\u03c0/4)_0 x f(x) dx = 1/6, (D) \u222b^(\u03c0/4)_0 f(x) dx = 1", "answer": "(A) and (B)", "page_number": 27, "image_available": "no", "question_subject": "mathematics"}
{"id": 56, "question": "Let f'(x) = 192 x^3 / (2 + sin^4 x) for all x \u2208 \u211d with f(1/2) = 0. If m \u2264 \u222b^1/2_0 f(x) dx \u2264 M , then the possible values of m and M are", "response_choices": "(A) m = 13 , M = 24, (B) m = 1/4, M = 1/2, (C) m = -11, M = 0, (D) m = 1, M = 12", "answer": "(D)", "page_number": 27, "image_available": "no", "question_subject": "mathematics"}
{"id": 57, "question": "One of the two boxes, box I and box II, was selected at random and a ball was drawn randomly out of this box. The ball was found to be red. If the probability that this red ball was drawn from box II is 1/3, then the correct option(s) with the possible values of n1, n2, n3 and n4 is(are)", "response_choices": "(A) n1 = 3 , n2 = 3 , n3 = 5 , n4 = 15, (B) n1 = 3 , n2 = 6 , n3 = 10 , n4 = 50, (C) n1 = 8 , n2 = 6 , n3 = 5 , n4 = 20, (D) n1 = 6 , n2 = 12 , n3 = 5 , n4 = 20", "answer": "(A) and (B)", "page_number": 28, "image_available": "no", "question_subject": "mathematics"}
{"id": 58, "question": "A ball is drawn at random from box I and transferred to box II. If the probability of drawing a red ball from box I, after this transfer, is 1/3, then the correct option(s) with the possible values of n1 and n2 is(are)", "response_choices": "(A) n1 = 4 and n2 = 6, (B) n1 = 2 and n2 = 3, (C) n1 = 10 and n2 = 20, (D) n1 = 3 and n2 = 6", "answer": "(C) and (D)", "page_number": 28, "image_available": "no", "question_subject": "mathematics"}
{"id": 59, "question": "The correct statement(s) is(are)", "response_choices": "(A) f'(1) < 0, (B) f(2) < 0, (C) f'(x) \u2260 0 for any x \u2208 (1, 3), (D) f'(x) = 0 for some x \u2208 (1, 3)", "answer": "(A), (B) and (C)", "page_number": 29, "image_available": "no", "question_subject": "mathematics"}
{"id": 60, "question": "If \u222b\u2081\u00b3 xf''(x) dx = -12 and \u222b\u2081\u00b3 x\u00b3 f'''(x) dx = 40, then the correct expression(s) is(are)", "response_choices": "(A) 9f'(3) + f'(1) - 32 = 0, (B) \u222b\u2081\u00b3 f(x) dx = 12, (C) 9f'(3) - f'(1) + 32 = 0, (D) \u222b\u2081\u00b3 f(x) dx = -12", "answer": "(C) and (D)", "page_number": 29, "image_available": "no", "question_subject": "mathematics"}