Question

A tank of water is viewed normally from above. State how the depth of the tank appears to change. Draw a labelled ray diagram to justify your answer.

Answer 1

i = apperent depth
d = actual depth
u = refractive index of incidence medium
v = –”– of refractive medium

vi = ud

so
i = ud/v

change in depth
= d - i
= d(1-u/v)


hope it helps you
@di