Question

Q9 on entering in an optically rarer medium from and optically denser medium
1)Speed of light increases
2)Speed of light decreases
3)Frequency of light increases
4)Wavelength of light decreases​

Answer 1

Answer:

2) speed of light decreases

Explanation:

When a light ray enters from an optically rarer medium (which has low refractive index) to an optically denser medium (which has a high refractive index), its speed slows down and bends towards the normal. As water is optically denser than air, a ray of light entering from air into water will bend towards the normal.

Answer 2

Explanation:

speed of light decreases

frequency have constantly

wavelength decreases