List of top Physics Questions

The speed of an electron accelerated from rest under a potential difference \( V \) is
Inside a closed surface, n electric dipoles are situated. The electric flux coming out from the closed surface will be
On inserting a dielectric material between two positive charges in air, the value of repulsive force will
The distance between two equal and opposite charges of \( 0.2 \mu C \) will be 3.0 cm. Their electric dipole moment will be
Two light waves of equal amplitude and equal wavelengths are superimposed. The amplitude of the resultant wave will be maximum when phase difference between them is
In a step-up transformer, the value of current in secondary coil compared to the primary coil is
In resonance condition, the frequency of L-C circuit is
In an a.c. circuit containing only capacitor, the phase difference between current and voltage is
In a purely inductive circuit, the power factor is
Image formed by convex mirror is always
The distance between two charges is made half and one of the charges is also halved. The force acting between the two will become as compared to previous value.
If the critical angle for total internal reflection from any medium to vacuum is 30°, then the velocity of light in the medium is.
If the number of turns is increased in any moving coil galvanometer, then its sensitivity
Unit of \( \frac{{\mu_0}}{{\epsilon_0}} \) is.
At neutral points
The peak value of an alternating current is 10 A. Its root mean square value will be?
Dimensional formula of permeability is.
When an ammeter is shunted then its measurement limit
The capacity of any condenser does not depend upon
Which of the following statements is true for two point charges of opposite sign?
If a conductor is placed in an external electric field, the field inside the conductor will be?
The electric field on the outer surface of a charged conductor is
Gauss’s law states that the electric flux through a closed surface is
Which of the following laws is based on the principle of energy conservation?
Kilowatt-hour (kWh) is the unit of