Home
Class 12
PHYSICS
An isosceles glass prism has one of its ...

An isosceles glass prism has one of its faces silvered. A light ray is incident normally on the other face which is identical in size to the silvered face. The light ray is reflected twice on the same sized faces and emerges through the base of the prism perpendicularly. Find the minimum value of refractive index of the material of the prism.

Text Solution

Verified by Experts

The correct Answer is:
`mu gt (1)/(sin 72^(@))`
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    ARIHANT|Exercise Level 2|62 Videos

  • GEOMETRICAL OPTICS

    ARIHANT|Exercise Level 3|9 Videos

  • ELECTROSTATICS

    ARIHANT|Exercise Level 3|59 Videos

  • MAGNETIC EFFECT OF CURRENT

    ARIHANT|Exercise Magnetic effect of Current|45 Videos

Similar Questions

Explore conceptually related problems

A ray of light normally on one of the faces of a right-angled isosceles glass prism is found to be totally reflected. What is the minimum value of the refractive index of the material of the prism ?

The cross section of a glass prism has the form of an isosceles triangle. One of th erefracting faces is silvered. A ray of light falling normally on the other refracting face, being reflected twice, emerges through the base of the prism perpendicular to it. Find the angles of the prism.

A ray of light incident at an angle 90° with the face of an equilateral prism passes symmetrically. Calculate the refractive index of the material of the prism

A ray of light incident at 49^(@) on the face of an equilaternal prism passes symmetrically. Calculate the refractive index of the material of the prism.

An isosceles prism has one of the refracting surfaces silvered. A ray of light is incident normally on the refracting face AB. After two reflections, the ray emerges from the base of the prism perpendicular to it. Find the angle of the prism.

A ray of ligh is incident normally on one of the faces of right angled isosceles prism as shhown above. It undergoes total internal reflection from hypotenuse. Which on of the following is the minimum refractive index of the material of the prism?

There is a equilateral prism of refractive index 3 on which a light ray is incident normally on one face as shown in the figure. Find the length of the path traveled by the light ray inside the prism.

If a light ray incidents normally on one of the faces of the prism of refractive index 2 and the emergent ray just grazes the second face of the prism, then the angle of deviation is

A prism ABC of angle 30^(@) has its face AC silvered. A ray of light incident at an angle of 45^(@) at the face AB retraces its path after refraction at face AB and reflection at face AC . The refractive index of the material of the prism is

A ray of light is incident horizontally on the face AB of the.right angled prism as shown in the figure. If the ray emerges grazing the surface AC, find the value of phi . Refractive index of the material of the prism is given to be n.