Quantum Mechanics

The intensity of the magnetic field due to a current-carrying circular coil of radius 12 cm at its center is perpendicular to the plane of the coil upward. Calculate the magnitude and direction of current flowing in the coil.

Deduce the formula of torque on an electric dipole placed in a uniform electric field.

Calculate the energy equivalence of unified atomic mass unit.

Define the 'wavefront' of a wave.

Discuss the significance of displacement current and find the phase difference between it and the conduction current.

If a thin prism of glass is immersed in water, then prove that the minimum deviation produced by the prism becomes one-fourth with respect to air. Given refractive index of glass with respect to air = and that of water with respect to air = .

What is the effect on range and sensitivity of an ammeter when the value of its shunt resistance increases?

A double concave lens has to be made from crown glass. How much should the radii of surfaces of lens be kept to make the power of lens -2.5 D? Refractive index of crown glass is 1.65.

Between radio waves and microwaves, which one has a higher frequency?