When light enters from air to glass the angle of incidence and refraction in air and glass are 45° and 30° respectively. Find the refractive index of glass.

Open in App

Solution

GIVEN ,
angle of incident= 45
angle of refraction = 30

Refractive index = sin i/sin r

= sin 45/sin 30

= 1/ √ 2 / 1/2

= 2/ √ 2

= √ 2

HOPE THIS HELPS

Suggest Corrections

Similar questions

Q. Find the angle of refraction for a ray of light travelling from glass to air. Given angle of incidence is

30^{\circ}

and refractive index of glass is

μ_{g} = \sqrt{2}

Glass has refractive index u with respect to air and the critical angle for a ray of light going from glass to air is $θ$ . If a ray of light is incident from air on the glasses with the angle of incidence $θ$ , the corresponding angle of refraction is

Q. A light ray is travelling from air to glass. The reflected and refracted rays are perpendicular to each other. If the angle of incidence in air is i the refractive index of glass is

Light enters from air to glass plate having refractive index 1.5. The speed of light in glass is

Q. Rays of light are entering from glass to glycerine. If refractive indexes of glass and glycerine are respectively 1.5 and 1.47, find the refractive index of glycerine with respect to glass.

Join BYJU'S Learning Program

When light enters from air to glass the angle of incidence and refraction in air and glass are 45° and 30° respectively. Find the refractive index of glass.

GIVEN , angle of incident= 45 angle of refraction = 30 Refractive index = sin i/sin r = sin 45/sin 30 = 1/ √ 2 / 1/2 = 2/ √ 2 = √ 2 HOPE THIS HELPS

GIVEN ,
angle of incident= 45
angle of refraction = 30

Refractive index = sin i/sin r

= sin 45/sin 30

= 1/ √ 2 / 1/2

= 2/ √ 2

= √ 2

HOPE THIS HELPS