See Fig. and answer the following question.
a. Find apparent height of the bird.
b. Find apparent depth of the fish.
c. At what distance will the bird appear to the fish ?
d. At what distance will the fish appear to the bird?

Explanation

(i) `d'_(a) = (36)/((1)/(((4)/(3)))) = (36)/(3//4) = 48cm`
(ii) `d'_(F) = (36)/(4//3) = 27cm`
(iii) For fish: `d_(B) = 36+48 = 84 cm`
`d_(a) = 36 + 48 = 84cm`
(iv) For bird: `d_(F) = 27 + 36 = 63 cm`
`d_(F) = 27 + 36 = 63 cm`
(v) Velocity of fish respect to bird `= 12 + ((12)/((4//3)//(1//1))) = 21 cm//sec`
Velocity of bird with respect to fish `= 12 + ((12)/((3//4)//(1//1))) = 28 cm//sec`