A cubic container is filled with a liquid whose refractive index increases linearly from top to bottom. Which of the following represents the path of a ray of light inside the liquid ?

Two plane mirrors M1 and M2 , placed at right angles, form two sides of a container. Mirror M1 is inclined at an angle theta_(0) to the horizontal. A light ray AB is incident normally on M1 . Now the container is filled with a liquid of refractive index mu so that the ray is first refracted, then reflected at M1 . The ray is next reflected at M2 and then comes out of the liquid surface making an angle theta with the normal to the liquid surface. Find theta .

(i) Define refractive index of a medium. (ii) In the following ray diagram, calculate the speed of light in the liquid of unknown refractive index.

A metal coin at the bottom of a beaker filled with a liquid of refractive index 4//3 to height of 6 cm . To an observer looking from above the surface of the liquid, coin will appear at a depth of (consider paraxial rays).

A metal coin at the bottom of a beaker filled with a liquid of refractive index 4//3 to height of 6 cm . To an observer looking from above the surface of the liquid, coin will appear at a depth of (consider paraxial rays).

A small coin is resting on the bottom of a beaker filled with a liquid. A ray of light from the coin travels upto the surface of the liquid and moves along its surface How fast is the light travelling the liquid ?