Compared to its speed in air, the speed of light in glass is…?

Question

a- the same

b- faster

c- slower

d- not measureable

Answer 1

C

(It's optically 'denser')

Answer 2

A) the same. Glass is only a means of splitting the light into a component or resonant frequency, due, in the main to the oxides in the glass.

Dr Antony

Answer 3

ans) c- slower

the reason is that:

glass is optically denser,due to which the wavelength of light entering it decreases but frequency remains same,

due to this,its speed also decreases & it bends towards the normal.