Physics-
General
Easy
Question
A glass rod has ends as shown in figure. The refractive index of glass is 
. The object ' O^' is at a distance 2R from the surface of larger radius of curvature. The distance between apexes of ends is 3R. Find the distance of image formed of the point object from right hand vertex. What is the condition to be satisfied if the image is to be real ?
The correct answer is:
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A hollow sphere of glass as shown in figure has refractive index and has a small mark on its interior surface which is observed from a point outside the sphere on the side opposite to the center. The inner cavity is concentric with the external surface and thickness of glass is everywhere equal to the radius of the inner surface. What is the apparent shift in the position of mark?
A hollow sphere of glass as shown in figure has refractive index and has a small mark on its interior surface which is observed from a point outside the sphere on the side opposite to the center. The inner cavity is concentric with the external surface and thickness of glass is everywhere equal to the radius of the inner surface. What is the apparent shift in the position of mark?
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