Question

A fish rising vertically upward with a uniform velocity of 8 ms-1, observes that a bird is diving vertically downward towards the fish with the velocity of 12 ms-1. If the refractive index of water is $\frac{4}{3}$ , then the actual velocity of the diving bird to pick the fish, will be _______ ms-1

Answer 1

The correct answer is: 3