List of top Physics Questions

What do you mean by quantization of charge?
Draw labelled diagram of converting a galvanometer into an ammeter.
Power of a thick lens is smaller than the thin lens. (T/F)
Sustained interference is caused by the superposition of two waves coming from two coherent sources. (T/F)
AC generator is based upon principle of electromagnetic induction. (T/F)
Photoelectric effect is not possible for the light of all frequencies. (T/F)
Define Kirchhoff’s first and second law.
When forward biasing is applied to the PN junction, width of depletion layer increases. (T/F)
Wave front due to light source situated at infinity is:
The stopping potential depends upon:
Isolated magnetic poles called magnetic monopoles are not known to exist. This statement is the result of:
When Boron is added as impurity to silicon, semiconductor becomes:
Which of the following pairs is an isobar?
Which mirror is used as shaving mirror?
What is the name given to the type of electromagnetic waves used to capture photographs of earth in foggy conditions?
What will happen if the electron revolving around nucleus of an atom becomes stationary?
What is the angle between reflected ray and refracted ray when angle of incidence is equal to angle of polarization?
The effect of temperature of the conductor on the drift velocity of electrons.
Lenz’s law gives:
The electrical resistance of metals:
Path of charged particle entering in uniform magnetic field at an angle \( 60^\circ \) is:
The electric potential inside a conducting sphere is:
Electric field intensity due to an electric dipole of very small length at a point on axial line at a distance r from its center varies as:
A bob of mass 0.1 \(\text {kg}\) hung from the ceiling of a room by a string 2 \(\text m\) long is set into oscillation. The speed of the bob at its mean position is 1 \(\text m\,\text s^{-1}\). What is the trajectory of the bob if the string is cut when the bob is 
  1. at one of its extreme positions, 
  2. at its mean position.
A ball is dropped from a height of 90 m on a floor. At each collision with the floor, the ball loses one tenth of its speed. Plot the speed-time graph of its motion between t = 0 to 12 s.