Home
Class 12
PHYSICS
Refractive index of a glass cube is sqrt...


Refractive index of a glass cube is `sqrt(2)`. A ray of light is incident on left face of the cube as shown. Right face of a glass cube is silvered. If the total deviation suffered by the ray when it comes out of the glass cube is `45n` (in degree) then find `n`:

Text Solution

Verified by Experts

The correct Answer is:
D

Applying snell's law at first surface
`1sin45^(@)=sqrt(2)xxsintheta`
`theta=30^(@)`
Since angle of incidence on horizontal face is more than `45^(@)` so the ray will suffer TIR on horizontal face as shown in the figure. so emergent ray will be parallel to incident ray.
Promotional Banner

Similar Questions

Explore conceptually related problems

One side of a glass slab is silvered as shown in the figure. A ray of light is incident on the other side at angle of incidence 45^@. Refractive index of glass is given as sqrt2 . The deflection suffered by the ray when it comes out of the slab is

One side of a glass slab is silvered as shown. A ray of light is incident on the other side at angle of incidence i=45^(@) . Refractive index of glass is given as 1.5 . The deviation of the ray of light from its initial path when it comes out of the slab is

A ray of light is incident normally on a plane glass slab. What will be (i) the angle of refraction, and (ii) the angle of deviation for the ray ?

One side of a glass slab is silvered as shown. A ray of light is incident on the other side at angle of incidence i = 45^(@) . Refractive index of glass a is given as 1.5. The diviation of the ray of light from its initial path when it comes out of the slab is

A light ray is incident on a glass sphere at an angle of incidence 60^(@) as shown. Find the angles r, r^(1) , e and the total deviation after two refractions.

A ray of light is incident normally on one of the faces of a prism of apex angle 30 degree and refractive index sqrt2 . The angle of deviation of the ray in degrees is

A ray is incident on a sphere of refractive index sqrt(2) as shown in figure. Angle of refraction of the ray inside sphere is 30^(@) if total deviation suffered by the ray is 30x^(0) , then find x.

A ray of light is incident on a glass sphere of refractive index 3/2. What should be the angle of incidence so that the ray which enters the sphere does not come out of the sphere ?

A ray of light in incident on a glass plate at an angle of 60^@ . What is the refractive index of glass if the reflected and refracted rays are perpendicular to each other?

A ray of light is incident on the surface of a glass plate of refractive index sqrt(3) at the polarising angle . The angle of incidence and angle of refraction of the ray is