Assertion : A ray of light entering from glass to air suffers change in frequency.
Reason : Velocity of light in glass is more than that ni air.

Direction : These questions have statement I and statement II. Of the four choices given below , choose the one that best describes the two statements. Statement I: A ray of light entering from glass to air suffers from change in frequency. Statement II. Velocity of light in glass is less than that in air.

When a ray of light enters a glass slab from air

When a ray of light enters a glass slab from air

When a ray of light enters a glass slab from air

A ray of light travelling obliquely from glass to air :

When a ray of light enters a glass slab from air.