Q."4 A light ray travels in a glass slab of refractive index `mu=2` .Find the time taken by the light ray to travel in the glass slab for a distance of `20sqrt(3)d`(Velocity of light =c )

A ray of light 10^(-9) second to cross a glass slab of refractive index 1.5. The thickness of the slab will be

The time taken by a ray of light to travel through a glass slab of thickness 2 cm and refractive index 1.5 will be

Light travels through a glass plate of thickness t and refractive index mu. If c is the speed of light in vacuum, the time taken by light to travel this thickness of glass is

The time taken by light to cross a glass slab of thickness 4 mm and refractive index 3 is

The time taken by a monochromatic light to travel a certain distance in air in 9 xx 10^(-6) seconds. The time taken by the light ray to travel the same distance in water of refractive index (4)/(3) is

Light travels through a glass plate of thickness d and having refractive index mu . If c is velocity of light in vacuum, the time taken by light to travel this thickness of glass is