List of top Physics Questions asked in PSEB XII

With help of labelled diagram, write principle of astronomical telescope and derive expression for magnifying power of an astronomical telescope, when final image is formed at least distance of distinct vision.
What is interference of light? Derive an expression for the fringe width in the Young’s double slit experiment.
Define binding energy per nucleon. Draw and explain the curve between binding energy per nucleon and mass number.
Find the coefficient of mutual inductance of a pair of coils if a current of 3 A in one coil causes the flux in the second coil of 1000 turns to change by \( 10^{-4} \, \text{weber} \) in each turn.
What is total internal reflection? Write necessary conditions for it.
With the help of a circuit diagram, explain the V-I characteristics of a PN junction diode in forward biasing.
What do you mean by impedance of LCR series circuit? Derive an expression for it by using phasor diagram.
A solenoid of length 0.5 m has a radius of 1 cm and is made up of 500 turns. It carries a current of 5 A. What is the magnitude of magnetic field inside the solenoid?
Give any two uses of X-rays.
What is an equipotential surface? Show that no work is done in moving a given charge over an equipotential surface.
With a circuit diagram, explain how a meter bridge can be used to determine unknown resistance of a given wire.
Derive an expression for force per unit length between two parallel straight conductors carrying current in the same direction.
State Faraday’s law of electromagnetic induction.
Write Einstein’s photoelectric equation.
Write any two differences between nuclear fission and nuclear fusion.
Draw labelled diagram of converting a galvanometer into an ammeter.
AC generator is based upon principle of electromagnetic induction. (T/F)
Photoelectric effect is not possible for the light of all frequencies. (T/F)
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)
What do you mean by quantization of charge?
Define Kirchhoff’s first and second law.
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: