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What is wedge shape? |
It is a shape in which two inclined planes are joined together to form a sharp edge. |
Why are fringes straight? |
The fringes are straight because the thickness of air is constant over a straight line along the width of the wedge. |
What will happen if we white light? |
Coloured fringes will be formed. |
What is fringes width? |
Fringe width is the distance between two consecutive bright or dark fringes. |
Why we use glass plate inclined? |
It turns the light rays by 90° so that the rays will fall normally on the slit. |
What is threshold frequency? |
The minimum frequency of incident radiation for photoelectron emission to take place. |
Stopping potential? |
The potential at which the current flow through the circuit stops |
Saturation current? |
The maximum value of photoelectric current is called as saturation current |
What is thermal conductivity? |
Thermal conductivity is the property of the material that indicates the ability of the material to conduct heat. |
Unit of thermal conductivity? |
W / mk |
Why is disc circular? |
To avoid loss of heat or for even heat distribution. |
Why can't it be used for good conductors? |
Bcoz the temperatures T1 and T2 would be almost same. |
Why steam is used? |
Because steam carries more heat than water. |
Thermal conductivity depends upon what? |
rate of heat transfer, temperature, surface area |
H = kA(T2 - T1) / x What is H? |
H is the steady state rate of heat transfer |
What is photoelectric effect? |
Emission of electrons when electromagnetic radiation hits the metal surface. |
What is stopping potential? |
The potential at which the current through the circuit stops. |
What is threshold frequency? |
Minimum frequency of incident radiation for photoelectron emission to take place. |
What is threshold wavelength? |
Minimum wavelength of incident radiation for photoelectron emission to take place. |
What is work function? |
Minimum energy of incident radiation for photoelectron emission to take place. |
Significance of planks constant? |
To find work function of metal.It tells us relation between energy and frequency.It tells the energy of 1 quanta.Energy of 1 quanta = hv |
What is Saturation current? |
The maximum value of photoelectric current. |
What is reverse bias? |
In reverse bias the reverse voltage slows down the flow of electrons and finally stops them. |
Full form of CRO? |
Cathode ray Oscilloscope |
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