JEE Main 2022 · 27 Jun · Shift 2 · Physics Q47

PhysicsSingle correct+4 / -1Question 47 of 90

If a wave gets refracted into a denser medium, then which of the following is true?

wavelength, speed and frequency decreases.

wavelength increases, speed decreases and frequency remains constant.

wavelength and speed decreases but frequency remains constant.

wavelength, speed and frequency increases.

Answer and worked solution

Official answer: C

Denser medium. Frequency is fixed by the source; speed falls, so the wavelength falls.

(C)

Topics:Refraction at plane surfaces Speed of waves

JEE Main 2022 · 27 Jun · Shift 2, Physics question 47