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

The speed of light is 299,792,458 ms^-1

(a) with respect to the earth

(b) with respect to the sun

(c) with respect to a train moving on the earth

(d) with respect to a spaceship going in outer space

1. (a) and (b)

2. (b) and (c)

3. (c) and (d)

4. All of the above

Which of the following methods can be used to measure the speed of light in laboratory?

1. Roemer method

2. Fizeau method

3. Foucault method

4. Michelson method

Which of the following methods can be used to measure the speed of light in water?

1. Roemer method

2. Fizeau method

3. Foucault method

4. Michelson method

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

Choose the correct option:

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)