Question

Find the time taken by light to travel a distance of 3cm in glass where c= 3x10*8 & refractive index of water +4/3

Answer 1

Explanation:

n=c/v

where n is refraction index

v=x/t=0.03/t

then,

4/3=3×10^8×t/0.03

t=1.3×10^-10 sec