fish is rising up vertically inside a pond with velocity 4

Last updated: 6/8/2023

fish is rising up vertically inside a pond with velocity 4 cm s and notices a bird which is diving ertically downward and its velocity appears to be 16 cm s to the fish If refractive index of water is 3 then A velocity of bird with respect to ground is 9 cm s B velocity of fish with respect to bird is 15 cm s C velocity of bird with respect to ground is 12 cm s D velocity of fish with respect to bird is 12 cm s