APPARENT SHIFT OF AN OBJECT DUE TO REFRACTION ( WHEN OBJECT AND OBSERVER ARE IN DIFFERENT MEDIUM)

The apparent depth of an object O from AB is

The weight of an object is due to

In Fig. , find the apparent depth of the object seen below surface AB.

Refraction takes place at a convex spherical boundary separating air-glass medium. For the image to be real, the object distance (mu_(g) = 3//2) Note Object lying in the glass.

A concave spherical surface of radius of curvature R = 20 cm separates two media A and B having refractive indices mu_(A) =(4)/(3) and mu_(B) =(3)/(2) respectively. A point object is placed on the principal axis. Find the distance of the object from the surface so that its image is virtual when (a) the object is in medium A. (b) the object is in medium B.

Find the apparent depth of object O below surface AB , seen by an observer in mediumn of refractive index mu_(2)

A point object O is placed in fornt of a transparent slab at a distance x from its surface. It is seenfrom the other side of he slab by light incident nearlyl normally to the slab. The thickness of the slab is t and its refractive index is mu . Show that the apparent shift in the position of the object is independent of x and find its value.

A concave mirror of radius of curvature h is placed at the bottom of a tank containing a liquid of refractive index mu upto a depth d. An object P is placed at height h above the bottom of the miror. Outside the liquid, an observer O views the object and its image in the mirror. The apparent distance between these two will be

An object P is focussed by a microscope M. A glass slab of thickness 2'1 cm is introduced between P and M. If the refractive index of the slab is P5, by what distance should the microscope be shifted to focus the object again ?