Question

Refractive index of glass is 1.5. Time taken for light to pass through a glass plate of thickness 10 cm

is_________.​

Answer 1

Answer:

speed in glass= 3/1.5 x 10^8= 2 x 10^8m/s

time taken= 0.01/2×10^8 = 5 x 10^-10 s