List of practice Questions

Give any two uses of X-rays.
Write Einstein’s photoelectric equation.
Write any two differences between nuclear fission and nuclear fusion.
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.
Photoelectric effect is not possible for the light of all frequencies. (T/F)
AC generator is based upon principle of electromagnetic induction. (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.
Draw labelled diagram of converting a galvanometer into an ammeter.
The stopping potential depends upon:
When Boron is added as impurity to silicon, semiconductor becomes:
Isolated magnetic poles called magnetic monopoles are not known to exist. This statement is the result of:
Which of the following pairs is an isobar?
Wave front due to light source situated at infinity is:
When forward biasing is applied to the PN junction, width of depletion layer increases. (T/F)
What is the angle between reflected ray and refracted ray when angle of incidence is equal to angle of polarization?
What will happen if the electron revolving around nucleus of an atom becomes stationary?
What is the name given to the type of electromagnetic waves used to capture photographs of earth in foggy conditions?
Which mirror is used as shaving mirror?
The electric potential inside a conducting sphere is:
The electrical resistance of metals: