MHT CET Physics question

Physics Ray Optics and Optical Instruments MHT CET

When light enters from air to water, then its

(A)frequency increases and speed decreases
(B)frequency is same but the wavelength is smaller in water than in airCorrect
(C)frequency is same but the wavelength in water is greater than in air
(D)frequency decreases and wavelength is smaller in water than in air

Answer: (B)

Solution

Frequency is fixed by the source and does not change at a boundary; speed falls to c/μ so wavelength λ/μ is smaller in water,

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-076935