A thin oil layer floats on water. A ray of light making an angle of incidence of `40^(@)` shines on oil layer. The angle of refraction of light ray in water is `(mu_(oil)=1.45, mu_("water")=1.33)`

A ray of light is incident on a glass slab of refractive index 1.5, making an angle of 40^(@) with the surface. The angle of refraction in glass is

A thick rectangular glass slab is kept inside a water trough. A ray of light passing through water is incident on the glass slab at an angle of 45^(@) . Calculate the angle of refraction, if refractive indices of water and glass are 1.33 and 1.45 respectively.

A ray of light is incident from water on the surface of separation of air and water at an angle 30^(@) , Calculate the angle of refraction in air. mu of water =(4)/(3)

A light travels from air into water, the angle of refraction is 25^@ to the normal. Find the angle of incidence. Refractive index of water is 1.33 . mu_a =1

A film of oil of refractive index 1.20, lies on water of refractive index 1.33. A light ray is incident at 30^(@) in the oil on the oil-water boundary. Calculate the angle of refraction in water.

An isosceles glass prism with base angles 40^(@) is champed over a tray of water in a position such that the base is just dipped in water. A ray of light incident normally on the inclined face suffers total internal reflection at the base. If the refractive index of water is 1.33 then the condition imposed on the refractive index mu of the glass is -

A plane mirror PQ is help normally to water surface of refractive idex 1.33. A ray of light is incident at an angle of 50^@ with the nirror surface. After reflection the ray is refracted into water. The angle of refraction r is

A plane mirror PQ is help normally to water surface of refractive idex 1.33. A ray of light is incident at an angle of 50^@ with the nirror surface. After reflection the ray is refracted into water. The angle of refraction r is