Wave Optics Test

Result

Wave Optics Test - 8

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Light appears to travel in a straight line, because

A
its velocity is very large

B
it is not absorbed by surrounding

C
it is reflected by surrounding

D
its wavelength is very small

Solution

Light appears to travel in a straight line because diffraction (or deviation from the path) is least in light. Diffraction is least because -of small wavelength of light. So small wave length of light causes the light to travel almost in straight line.
Question 2
1 / -0

Light propagates rectilinearly, because of its

A
wave nature

B
frequency

C
wavelength

D
velocity
Question 3
1 / -0

According to Huygens' principle, light is a form of

A
none of the above

B
wave

C
particle

D
rays
Question 4
1 / -0

Which one of the following statements is true?

A
Both light and sound waves in air are transverse

B
The sound waves in air are longitudinal, while the light waves are transverse

C
Both light and sound waves in air are longitudinal

D
Both light and sound waves can travel in vacuum

Solution

Sound waves are longitudinal and they cannot travel through vacuum.
Light waves are transverse waves and they can travel through vacuum.
Question 5
1 / -0

Interference was observed in interference chamber, when air was present. Now, the chamber is evacuated and if the same light is used, a careful observer will see

A
interference with bright bands

B
interference, in which width of the fringe will be slightly increased

C
interference with dark bands

D
no interference

Solution

Strictly speaking, the refractive index of air is 1⋅00029 and that of vacuum is 1. Therefore, on evacuating the chamber, the wavelength of the light used will increase slightly. Since β ∝ λ, the fringe width will increase slightly.