Question

An underwater fish is at a depth of 12 m from the surface and a bird is at height
of 18 m from the surface. At what total height does fish locates bird? (uw =4/3)​

Answer 1

Answer:

36m

Explanation:

apparent distance of the bird for the fish=depth in water+height in air*refractive index

=12+18*4/3

remember that pools seem less deep than they are ( apparent depth = d/μ ) and vice versa when you're looking up from inside the pool (apparent height=μh)

Answer 2

Answer:

Correct answer is 24 m

Explanation :

bird is at

dA/b (App height of bird)    =  nr/ni (Actual height)

= 4/3 x 18m

= 216