Question

How long does it take for a short pulse of light to travel from one end of the glass to the other?

Answer 1

It takes nd/ (lambda*f) time or a short pulse of light to travel from one end of the glass to the other.

If we talk about free space, that is, vacuum, light travels at a speed of 3x10^8 m/s, yet inside a glass light travels at a speed of v= c/n, where v is the velocity of the light and n is the refractive index. Now,

v=d/t,

so t= d/v

t= d/ (c/n)= n*d/c

c= lambda*f

t= nd/(lambda*f)

here, d is the thickness of the block, t is the time required and c refers to speed of light.

To learn more about refractive index, click

brainly.com/question/13088981

#SPJ4