In a tank, a 4cm thick layer of water `(mu=4/3)` floats on a 6 cm thick layer of an organic liquid (`mu` = 1.5). Viewing at normal incidence, how far below the water surface does the bottom of tank appear to be?

A 20 mm thick layer of water (mu=(4)/(3)) floats on a 35 mm thick layer of another liquid (mu=(7)/(5)) in a tank. A small coin lies at the bottom of the tank. Determine the apparent depth of the coin when viewed normally from above the water.

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 ?

The number of waves in a 3 - cm- thick layer of a liquid is same as in 4 - cm - thick layer of another liquid. If the refractive index of the first liquid is 1.8, then what will be for that of another liquid?

The flat bottom of cylinder tank is silvered and water (mu=4/3) is filled in the tank upto a height h. A small bird is hovering at a height 3h from the bottom of the tank. When a small hole is opened near the bottom of the tank, the water level falls at the rate of 1 cm/s. The bird will perceive that his velocity of image is 1/x cm/sec (in downward directions) where x is

A wide vessel of uniform cross- section with a small hole in the bottom is filled with 40cm thick layer of water and 30cm thick layer of kerosene.The relative density of kerosene is 0.8 .The initial velocity of flow of water streaming out of the hole is (take g=10ms^(-2) )

A wide vessel of uniform cross-section with a small hole in the bottom is filled with "40cm thick layer of water and "30cm" thick layer of kerosene.The relative density of kerosene is "],[0.8" .The initial velocity of flow of water streaming out of the hole is (take g=10ms^(-2)