A layer of benzene `(mu=1.5)` 12 cm thick floats on water layer `(mu=4//3)` 8 cm thick in a vessel. When viewed from the top, the apparent depth of bottom of vessel below the surface of benzene will be

An object lies 100 cm inside water (mu=4//3) . It is viewed from air nearly normally. Find the apparent depth of the object.

A mark is made on the bottom of a vessel and over this mark, a glass slab to thickness 3.5 cm and refractive index (7)/(4) is placed. Now water (refractive inidex, (4)/(3)) is poured into the vessel so that the surface of water is 8 cm above the upper surface of the slab. Looking down of normally through the water, the apparent depth of the mark below the surface of water will be :

A layer of oil 3 cm thick is floating on a layer of coloured water 5 cm thick. Refractive index of coloured water is 5//3 and the apparent depth of the two liquids appears to be 36//7 cm. Find the refractive index of oil.

A glass sphere ( mu =1.5) of radius 20 cm has small air bubble 4 cm below its centre. The sphere is viewed from outside and along vertical line through the bubble. The apparent depth of the bubble below the surface of sphere is (in cm)

A 20 mm thick layer of water ( n=1.33 ) floats on a 40 mm thick layer of carbon tetrachloride (n=1.46) in a tank. A coin lies at the bottom of the tank. At what depth below the top water surface do you perceive the coin ?

A layer of oil 3 cm thick is flowing on a layer of coloured wtater 5 cm thick. Refractive index of coloured water is (5)/(3) and the apparent depth of the two liquids appears to be (36)/(7) cm . What is the refractive index of oil?

A glass sphere (mu=1.5) with a radius of 15.9 cm has a tiny air bubble 5 cm its centre.This sphere is viewed looking down along the extended radius containing the bubble.What is the apparent depth of the bubble below the sirface of the sphere ? 8.57 cm from top