A fish rising vertically to the surface of water in a lake uniformly at the rate of 3 ms^(-1)observes a bird diving vertically towards the water at a rate of 9 ms^(-1)vertically above it. If the refractive index of water is 4/3, the actual velocity of the dive of the bird is

A fish rising vertically to the surface of water in a lake uniformly a

1.	A fish rising vertically to the surface of water in a lake uniformly at the rate of 3 ms^(-1)observes a bird diving vertically towards the water at a rate of 9 ms^(-1)vertically above it. If the refractive index of water is 4/3, the actual velocity of the dive of the bird is
Answer» 6 4.5 1.5 2 Answer :B

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A fish rising vertically to the surface of water in a lake uniformly at the rate of 3 ms^(-1)observes a bird diving vertically towards the water at a rate of 9 ms^(-1)vertically above it. If the refractive index of water is 4/3, the actual velocity of the dive of the bird is

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