Ray Optics and ...

A liquid of refractive index 1.6 is introduced between two identical plano-convex lens in two ways P and Q as shown. If the lens material has refractive index 1.5, the combination is

Maximum lateral displacement of a ray of light incident $$( i =90)$$ on a slab of thickness $$t$$ is:

A light ray is incident normally on the surface $$AB$$ of a prism of refracting angle $$60^\circ$$. If the light ray does not emerge from $$AC$$, then find the refractive index of the prism.

A thin concavo-concave lens is surrounded by two different liquids A and B as shown in figure. The system is supported by a plane mirror at the bottom. Refractive index of A, lens and B are 9/5 , 7/5 and 8/7 respectively.The radius of curvature of the surfaces of the lens are same and equal to 10 cm. Where should an object be placed infront of this system so that final image is formed on the object itself. 

A beaker contains Water and Benzene of refractive indices $$\dfrac{4}{3}$$ and $$\dfrac{3}{2}$$ respectively one above the other. If depth of each is $$12 \ cm$$, apparent depth of the bottom of the beaker is 

A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image formed of an object of height 2 cm placed 30 cm from the lens?

A Plano convex lens is made of  glass of refractive index 1.5.The of curvature of its convex surface is R. Its focal length:

The refractive index of flint glass for blue F line is $$1.6333$$ and for red C line is $$1.6161$$. If the refractive index for yellow D line is $$1.622$$, then the dispersive power of glass is

A lens forms a vertical image 14 cm away from it when an object is placed 10 cm away from it. The lens is a....... less of focal length.......

Time taken by the sunlight to pass through a window of thickness 4mm whose refractive index is 1.5 is