List of top Physics Questions

Explain the polarization of light.
What is an electromagnetic wave? On which factors does its velocity in vacuum depend?
The equivalent of decimal number 27 in binary number system will be:
Define intensity of electric field at any point. Write down its S.I. unit.
An electric dipole of dipole moment \(2 \times 10^{-6}\) cm is kept inside a closed surface. What will be the net electric flux coming out from the surface?
The device which works for both modulation and demodulation is called:
Distance of communication satellite from the surface of the Earth is:
In a full wave rectifier, if input frequency is 50 Hz, then output frequency will be:
Attenuation is measured in:
If in a logic gate output \(Y\) is obtained by the product of its both inputs \(A \cdot B\), then the gate is:
P-N junction diode is used as:
Instrument used to increase input voltage/current is called:
Width of forbidden energy gap in the semiconductor is approximately:
The S.I. unit of decay constant is:
Number of neutrons in an atom of \(^{230}_{90}\mathrm{Th}\) is:
The half-life of a radioactive substance is:
Two sources of monochromatic light are coherent when their:
The de Broglie wavelength is:
The fringe width in interference of light due to two coherent sources is:
The colour of the sky is blue due to:
Photocell is based on:
Convex lens is used in:
Cathode rays are group of:
A large virtual image of an object is formed by:
Powers of two lenses kept in contact are \( P_1 \) and \( P_2 \). The power of the equivalent lens will be: