Home
Class 12
PHYSICS
A ray of light incident on a glass spher...

A ray of light incident on a glass sphere (refractive index `sqrt(3)` ) suffers total internal reflection before emerging out exactly parallel to the incident ray. The angle of incidence was

A

`75^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
`anglei = 2 angler `
`(sini)/(sin r) = sqrt(3)`
2 cos r = `sqrt(3)`
r = `30^(@) " and " i = 60^(@)`
Note : But for r = `30^(@)` TIR cannot take place at B.
Promotional Banner

Similar Questions

Explore conceptually related problems

A ray of light falls normally on one face of a right angled prims of refracting angle A. It suffers two total internal reflections before coming out of prism parallel to incident ray as shown. Refractive index to prism material will be:

A ray of light is incident on a glass prism of refractive index mu and refractive angle A. If it just suffers total internal reflection at the other face, obtain an expression relating the angle of incidence , angle of prism and critical angle.

A ray of light is incident on a transparent glass slab of refractive index sqrt3 . If the reflected and refracted rays are mutually perpendicular, what is the angle of incidence?

A ray of light is incident on a glass plate. The light ray travels distance of 5 cm inside the glass plate before emerging out of the glass plate. If the incident ray suffers a deviation of 30°, the perpendicular distance between incident and the emergent ray is

A ray of light is incident on a transparent glass slab of refractive index 1.62. If the reflected and refracted rays are mutually perpendicular, what is the angle of incidence ? [ tan^(–1) (1.62) = 58.3^(@) ]

A ray incident at a point at an angle of incidence of 60^(@) enters a glass sphere with refractive index sqrt(3) and it is reflected and refracted at the farther surface of the sphere. The angle between the reflected and refracted rays at this surface is:

A ray of light is incident on the surface of a glass plate of reflective index 1.536 such that the reflected and refracted rays are mutually perpendicular. What is the angle of reflection ?

The path of a ray of light passing through an equilateral glass prism ABC is shown in figure. The ray of light is incident on face BC at the critical angle for just total internal reflection. The total internal reflection. The total angle of deviation after the refraction at face AC is 108^@ . Calculate the refractive index of the glass.

At what angle should a ray of light be incident on the face of a prism of refracting angle 60^(@) so that it just suffers total internal reflection at the other face ? The refractive index of the prism is 1.524.