set 14 MCQ Questions & Answers Detailed Explanation

Question : 1

Placement of another identical prism in an inverted position with respect to the first and allowing the colours of spectrum to pass through it will

a) keep the spectrum as before

b) change the spectrum into white light

c) change the spectrum into a black band

d) split into more colours

Question : 2

When light waves pass from air to glass the variable affected are

a) Wavelength and frequency

b) Velocity and frequency

c) Wavelength, frequency and velocity

d) Wavelength and velocity

Question : 3

In television broadcast, the picture signals are transmitted by

a) Frequency modulation

b) Phase modulation

c) Amplitude modulation

d) Angle modulation

Question : 4

The acronym for LASER is

a) Low Amplitude Short Energy Radiation

b) Light Amplification by Stimulated Emission of Radiation

c) Low Amplitude Stimulated Emission of Radiation

d) Light Amplification by Short Energy Radiation

Question : 5

Assertion (A):
The boiling point of water decreases as the altitude increases.
Reason (R):
The atmospheric pressure increases with altitude.
Code

a) Both (A) and (R) are true, but (R) is not the correct explanation of (A)

b) (A) is true, but (R) is false

c) Both (A) and (R) are true and (R) is the correct explanation of (A)

d) (A) is false, but (R) is true

Question : 6

Consider the following statements : If the same note is played on a flute and a sitar, one can still distinguish between them because they differ in

1. frequency
2. intensity
3. quality

a) 3 only

b) 1 only

c) 2 and 3

d) 2 only