Consider the following two statements regarding a linearly polarized, plane electromagnetic wave:

(A) The electric field and the magnetic field have equal average values.

(B) The electric energy and the magnetic energy have equal average values.

1.  Both A and B are true

2.  A is false but B is true

3.  B is false but A is true

4.  Both A and B are false

A free electron is placed in the path of a plane electromagnetic wave. The electron will start moving

1.  along the electric field

2.  along the magnetic field

3.  along the direction of propagation of the wave

4.  in a plane containing the magnetic field and the direction of propagation

A plane electromagnetic wave is incident on a material surface. The wave delivers momentum \(p\) and energy \(E.\) Then:

An electromagnetic wave going through vacuum is described by

E = E₀ sin(kx – ωt)

Which of the following is/are independent of the wavelength?

(a) k
(b) ω
(c) k/ω
(d) kω

Choose the correct option 

1. (a), (b) 

2. (b), (c) 

3. (c) only 

4. (a), (d) 

Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor:

Choose the correct option:

Speed of electromagnetic waves is the same

(a) for all wavelengths
(b) in all media
(c) for all intensities
(d) for all frequencies

Choose the correct option 

1. (a), (b)

2. (b), (c)

3. (c) only

4. (a), (d)

Which of the following have zero average value in a plane electromagnetic wave?
(a) electric field
(b) magnetic field
(c) electric energy
(d) magnetic energy

Choose the correct option 

1. (a), (b) 

2. (b), (c) 

3. (c) only 

4. (a), (d)

The energy contained in a small volume through which an electromagnetic wave is passing oscillates with

(a) zero frequency
(b) the frequency of the wave
(c) half the frequency of the wave
(d) double the frequency of the wave

Choose the correct option 

1. (a), (b) 

2. (b), (c) 

3. (c), (b)

4. (d) only

Light passes through a closed cylindrical tube containing a gas. If the gas is gradually pumped out, the speed of light inside the tube will

1. increase

2. decrease

3. remain constant

4. first increase and  then decrease

The speeds of red light and yellow light are exactly same

1. in vacuum but not in air

2. in air but not in vacuum

3. in vacuum as well as in air

4. neither in vacuum nor in air