Question

1. The speed of light from sun when enters the water droplet
undergoes this phenomenon
A). its speed decreases
B). Light gets absorbed in the droplet
C). it becomes monochromatic
D). Passes through undeviated
2. The rainbow formation could be because of the following reasons
A). light being reflected when entering a droplet of water, then
refracted inside on the back of the droplet and refracted again when
leaving it.
B). light being refracted when entering a droplet of water, then
reflected inside on the back of the droplet and refracted again when
leaving it.
C).Due to interference of different wavelengths in white light
D). All scenarios possible.
3. When compared to air, medium of water droplet is
A). Optically rarer
B). Has same optical density

C). optically insignificant when compared to air
D). optically denser.
4. Rainbow can also be observed on a sunny day when an observer
looks at the sky through a waterfall or a sprinkler source or through a
water fountain with the following condition.
A). Sun between the observer and the water source.
B). Sun behind the observer.
C). Sun behind the water source with observer in the opposite
direction.
D). Position of sun does not affect the formation of rainbow.

Answer 1

1. Answer:-  B). Light gets absorbed in the droplet
2. Answer:-  B). light being refracted when entering a droplet of water, then  reflected inside on the back of the droplet and refracted again when  leaving it.
3. Answer:-  optically denser.
4. Answer:-  D). Position of sun does not affect the formation of rainbow.

Answer 2

The statements with the correct options are given below::

1. The speed of light from the sun when enters the water droplet undergoes this phenomenon A. Its speed decreases

[When light rays enter from one medium to another it gets refracted and the speed of light rays decreases but again, on coming out of the second medium the speed increases. On entering the water droplets, light rays get refracted, and their speed decreases. When they enter the water medium, they get scattered into 7 colors similar to the rainbow effect.]

2. The rainbow formation could be because of the following reasons A). light being reflected when entering a droplet of water then

(when a source of light enters the medium of a water droplet, the light gets refracted and a spectrum appears due to the refraction, each wave in the spectrum gets dispersed into seven different colors which are called the rainbow.)

3. When compared to air, the medium of the water droplet is D). optically denser.

(The speed of light decreases while traveling through the water. The speed of light in water is comparatively lower than that of air.)

4. Rainbow can also be observed on a sunny day when an observer looks at the sky through a waterfall or a sprinkler source or through a

water fountain with the following condition.

B). Sun behind the observer.

(a rainbow can be observed on a sunny day when the sun is behind the observer. )