A ray of light is incident on an air-water interface
PHYSICS · Single correct · CBSE · Physics · Light — Reflection and Refraction · Light — Reflection and Refraction
Problem
A ray of light is incident on an air-water interface, passing from air into water, at an angle of 45∘. Which of the following quantities change as the light enters the water? (i) Wavelength (ii) Frequency (iii) Speed of propagation (iv) Direction of propagation
(1) I, III only
(2) III, IV only
(3) I, II, IV only
(4) I, III, IV only