Question

A monochromatic beam of light passes from a denser medium into a rarer medium. As a result(a) Its velocity increases(b) Its velocity decreases(c) Its frequency decreases(d) Its wavelength decreases

Answer 1

Velocity increase from denser to rarer medium

Answer 2

Answer:

When a monochromatic beam of light passes from a denser medium to a rarer medium (a) Its velocity increases.

Explanation:

As light passes from denser to rarer medium, it bends away from the normal by following the Snell's law. It is because the speed of light increases as it passes from denser to rarer medium and decreases as it passes from rarer to denser medium.