[
  {
    "question_number": "1(i)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "b"
  },
  {
    "question_number": "1(ii)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "a"
  },
  {
    "question_number": "1(iii)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "c"
  },
  {
    "question_number": "1(iv)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "a"
  },
  {
    "question_number": "1(v)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "b"
  },
  {
    "question_number": "1(vi)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "c"
  },
  {
    "question_number": "1(vii)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "d"
  },
  {
    "question_number": "1(viii)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "b"
  },
  {
    "question_number": "1(ix)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "a"
  },
  {
    "question_number": "1(x)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "a"
  },
  {
    "question_number": "1(xi)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "b"
  },
  {
    "question_number": "1(xii)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "a"
  },
  {
    "question_number": "1(xiii)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "c"
  },
  {
    "question_number": "1(xiv)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "d"
  },
  {
    "question_number": "1(xv)",
    "type": "mcq",
    "marks": 1,
    "correct_answer": "a"
  },
  {
    "question_number": "2(i)(a)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "C¹⁴ is a radioisotope. Used for carbon dating."
  },
  {
    "question_number": "2(i)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Class II lever."
  },
  {
    "question_number": "2(ii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Centripetal"
  },
  {
    "question_number": "2(ii)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "zero"
  },
  {
    "question_number": "2(iii)",
    "type": "numerical",
    "marks": 2,
    "correct_answer": "30 N"
  },
  {
    "question_number": "2(iv)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Mechanical advantage using a block and tackle system of 9 pulleys is 9 whereas the mechanical advantage of a single moveable pulley is 2."
  },
  {
    "question_number": "2(iv)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Increase of number of pulley increases mechanical advantage."
  },
  {
    "question_number": "2(v)",
    "type": "numerical",
    "marks": 2,
    "correct_answer": "4:1"
  },
  {
    "question_number": "2(vi)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Resistance decreases"
  },
  {
    "question_number": "2(vi)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Current (Intensity of light) increases as resistance decreases"
  },
  {
    "question_number": "2(vii)",
    "type": "numerical",
    "marks": 2,
    "correct_answer": "x : y = 17 : 10"
  },
  {
    "question_number": "3(i)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "In between optical centre and focus"
  },
  {
    "question_number": "3(i)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Because concave lens produces reduced size image."
  },
  {
    "question_number": "3(ii)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "No. The geyser draws I = P/V = 1540/220 = 7A. Hence, 5A rated fuse will blow off for the geyser."
  },
  {
    "question_number": "3(iii)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "1. Increasing the number of turns of the armature. 2. Increasing the applied battery e.m.f."
  },
  {
    "question_number": "3(iv)",
    "type": "numerical",
    "marks": 2,
    "correct_answer": "165000 J"
  },
  {
    "question_number": "3(v)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "₅₆Ba¹⁴¹ + ₃₆Kr⁹² + 3₀n¹"
  },
  {
    "question_number": "4(i)",
    "type": "numerical",
    "marks": 3,
    "correct_answer": "f = 24 cm, Power = 4.17 D"
  },
  {
    "question_number": "4(ii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Microwave"
  },
  {
    "question_number": "4(ii)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "X-rays"
  },
  {
    "question_number": "4(ii)(c)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Both have same speed in vacuum"
  },
  {
    "question_number": "4(iii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Red colour is scattered least due to its longest wavelength in visible range."
  },
  {
    "question_number": "4(iii)(b)1",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "43°"
  },
  {
    "question_number": "4(iii)(b)2",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "60°"
  },
  {
    "question_number": "4(iii)(b)3",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Indigo or violet"
  },
  {
    "question_number": "5(i)(a)",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "8/9"
  },
  {
    "question_number": "5(i)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "The principle of reversibility"
  },
  {
    "question_number": "5(i)(c)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "No"
  },
  {
    "question_number": "5(ii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "False"
  },
  {
    "question_number": "5(ii)(b)",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "10t₂/t₁"
  },
  {
    "question_number": "5(iii)(a)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "Diagram completion (path traced through prism)"
  },
  {
    "question_number": "5(iii)(b)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "1. Angle of incidence 2. Refractive index"
  },
  {
    "question_number": "6(i)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Centre of gravity is the point where the mass of the whole body appears to be concentrated."
  },
  {
    "question_number": "6(i)(b)1",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "2 cm"
  },
  {
    "question_number": "6(i)(b)2",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Yes"
  },
  {
    "question_number": "6(ii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Marble A"
  },
  {
    "question_number": "6(ii)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Path 1"
  },
  {
    "question_number": "6(ii)(c)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Both paths"
  },
  {
    "question_number": "6(iii)(a)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "Diagram with VR=2 pulley system"
  },
  {
    "question_number": "6(iii)(b)1",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "1.6"
  },
  {
    "question_number": "6(iii)(b)2",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "30 kgf"
  },
  {
    "question_number": "7(i)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Ultrasonic wave"
  },
  {
    "question_number": "7(i)(b)",
    "type": "numerical",
    "marks": 2,
    "correct_answer": "1 s"
  },
  {
    "question_number": "7(ii)(a)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "²³⁴₉₀Th → ²³⁰₈₈Ra + ⁴₂He → ²³⁴₉₁Pa + ⁰₋₁e"
  },
  {
    "question_number": "7(ii)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "U-235"
  },
  {
    "question_number": "7(iii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Resonance"
  },
  {
    "question_number": "7(iii)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Natural frequency of the air column matched with the frequency of the tuning fork."
  },
  {
    "question_number": "7(iii)(c)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Decrease. Frequency is inversely proportional to the air column length."
  },
  {
    "question_number": "8(i)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Non-ohmic"
  },
  {
    "question_number": "8(i)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "The resistance is not constant. It increases as voltage and current increases."
  },
  {
    "question_number": "8(i)(c)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Ohm’s law: The flow of current through the conductor is directly proportional to the potential difference established across the conductor provide its physical conditions are constant."
  },
  {
    "question_number": "8(ii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Step down transformer"
  },
  {
    "question_number": "8(ii)(b)",
    "type": "long answer",
    "marks": 2,
    "correct_answer": "Secondary wire is thicker because secondary current is higher than primary current."
  },
  {
    "question_number": "8(iii)(a)",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "8 Ω"
  },
  {
    "question_number": "8(iii)(b)",
    "type": "numerical",
    "marks": 1,
    "correct_answer": "0.5 A"
  },
  {
    "question_number": "8(iii)(c)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Equal"
  },
  {
    "question_number": "9(i)",
    "type": "numerical",
    "marks": 3,
    "correct_answer": "25 g"
  },
  {
    "question_number": "9(ii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "When lake freezes, it releases latent heat to the atmosphere which warms it."
  },
  {
    "question_number": "9(ii)(b)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "No change in average kinetic energy."
  },
  {
    "question_number": "9(ii)(c)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "1 g of ice at 0°C (has latent heat)"
  },
  {
    "question_number": "9(iii)(a)",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Number of turns in armature"
  },
  {
    "question_number": "9(iii)(b)1",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Maxwell right hand thumb rule"
  },
  {
    "question_number": "9(iii)(b)2",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "X to Y"
  },
  {
    "question_number": "9(iii)(b)3",
    "type": "long answer",
    "marks": 1,
    "correct_answer": "Density of magnetic lines of force decreases"
  }
]