In a pond, a fish at rest sees a bird diving vertically towards water at the rate of 3 m/s vertically above the fish. If the refractive index of water is 43 what is the actual speed of the bird.
1.45 m
1.41 m
2.25 m
5.23 m
A
1.41 m
B
2.25 m
C
5.23 m
D
1.45 m
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