Discuss briefly the experiment conducted by Hertz to produce and detect electromagnetic spectrum.

Write an expression for the momentum of Electromagnetic wave.

Write the uses of Infrared radiation

Write the frequency source of production and uses of Ultraviolet radiation.

Write the production of gamma rays and mention its properties and uses.

The charge on a parallel plate capacitor varies as q = q_o cos 2\(\pi \gamma \)t. The plates are very large and close together. (area - A. separation - d) find the displacement current through the capacitor?

A variable frequency ac source is connected to capacitor. How will the displacement current change with decrease in frequency.

How does Ampere - Maxwell law expalain the flux of current trough a capacitor when it is being charged by a battery? write the expression for the displacement current in terms of the rate of change of electric flux.

Write the generalized expression for Ampere's circuital law in terms of I_c & I_d. Mention the situation when there is
(i) only conduction current &no displacement current (I_d).
(ii) only I_d & no I_c.

Identify the Electromagnetic waves whose wavelength vary as
(a) 10^-12 m to 10^-8 m
(b) 10^-4 m and write their uses.

Name the parts of Electromagnetic spectrum which is
(i) used to destroy becteria.
(ii) produced by where is a sudden deceleration of high speed electrons.
(iii) used in food industry.

Identify the following Electromagnetic radiations
(a) 10⁹ Hz
(b) 10¹¹ Hz. Give one application of each.

Explain the concept of intensity of electromagnetic waves.

Explain Faraday's law of electromagnetic induction.

Obtain an expression for energy density.