When light enters from air to water, then its frequency:

increases and speed decreases

No worries! We‘ve got your back. Try BYJU‘S free classes today!

is same but the wavelength is smaller in water than in air

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

is same but the wavelength in water is greater than in air

No worries! We‘ve got your back. Try BYJU‘S free classes today!

decreases and wavelength is smaller in water than in air

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A is same but the wavelength is smaller in water than in air
When light enters from air to water, since energy remains the same, its frequency also remains the same. But the speed of light decreases, decreasing its wavelength.
Speed of light can be given by, $v = n λ$ , where $λ$ is wavelength.
Hence wavelength is smaller in water than in air.

Suggest Corrections

Similar questions

Q. The speed of light in water is

{(\frac{3}{4})}^{t h}

of that in air. If the wavelength of the same light in air is

6000 Å

, its wavelength in water is :

Q. When a ray of light enters from air in to water then its wavelength

The wavelength of sodium light in air is 589 nm. (a) Find its frequency in air. (b) Find its wavelength in water (refractive index = 1.33). (c) Find its frequency in water. (d) Find its speed in water.

Q. The wavelength of sodium light in air is 589 nm. (a) Find its frequency in air. (b) Find its wavelength in water (refractive index = 1.33) (c) Find its frequency in water (d) Find its speed in water.

Q. Light of wavelength 8000 A enters from air into water left side and

μ_{w a t e r} = 4 / 3

. What is the change in the frequency right side of light in water?

Join BYJU'S Learning Program