A bird is flying `3m` above the surface of water,If the bird is diving vertically down with speed `=6m//s`his apparent velocity as seen by a stationary fish underwater is:

A bird is flying 3m above the surface of water. To a fish underwater, the height of the bird from the water surface appears to be

A fish rising vertically up towards the surface of waterwith speed 3ms^(-1) observes a bird diving vertically down towards it with speed 9ms^(-1) The actual velocity of bird is (Given mu_ water =4/3

A fish rising up vertically toward the surface of water with speed 3ms^(-1) observes a bird diving down vertically towards it with speed 9ms^(-1) . The actual velocity of bird is

In a lake, a fish rising vertically to the surface of water uniformly at the rate of 3 m/s, observes a bird diving vertically towards the water at the rate of 9 m/s. The actual velocity of the dive of the bird is (given, refractive index of water = 4/3)

A plane mirror is fixed at the bottom of a vessel as shown in the figure. Water of refractive index mu is filled up to a height h in the vessel. There is a fish at a height h//2 from bottom of vessel and there is a bird at a height h above the surface of water in the vessel. (a) Calculate apparent distance of bird as seen by the fish. (b) Calculate apparent distance of image of bird in mirror as seen by the fish. (c) Calculate apparent distance of fish as seen by the bird. (d) Calculate apparent distance of image of fish in the mirror as seen by the bird.

A fish is rising up vertically inside a pond with velocity 4 cm/s and notices a bird, which is diving vertically downward and its velocity apperars to be 16 cm//s (to the fish) . What is the real velocity of the diving bird, If refractive index of water is 4/3

A fish is rising up vertically inside a pond with velocity of 4cm//s , and notices a bird , which is diving vertically downward and its velocity appears to be 16cm//s (to th fish). What is the real velocity of the diving bird, if refractive index of water is 4//3 ?

A fish is moving up vertically with speed 4 cm/s inside a pond. A bird is moving vertically downward (see figure). Velocity of the bird w.r.t. fish is 16 cm/s downward. Find out the actual velocity of the bird (in cm/s). Given refractive index of water is (4)/(3) .

An under water swimmer is at a depth of 12 m below the surface of water. A bird is at a height of 18 m from the surface of water, directly above his eyes. For the swimmer the bird appears to be at a distance from the surface of water equal to (Refractive Index of water is 4/3)