In a lake, a fish rising vertically to the surface of water uniformly at the rate of 
, observes a bird diving vertically towards the water at the rate of 
. The actual velocity of the dive of the bird is (Take, refractive index of water 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Fish is observer and bird is object.
Apparent distance between F and B at some instant will be
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