question_answer

A point object is 24 cm above the surface of water \[(\mu =4/3)\] in lake. A fish inside the water will observe the image to be at a point

A) 6 cm above the surface of water

B) 6 cm below the surface of water

C) 18 cm above the surface of water

D) 32 cm above the surface of water

Correct Answer: D

Solution :

[d] Fish inside water will see point P at p' as explained in the figure Here \[\frac{MP'}{MP}=\mu =\frac{4}{3}\] \[\frac{MP'}{24}=\frac{4}{3}\]\[\Rightarrow \]\[MP'=24\times \frac{4}{3}=32\,cm\] above the surface of water.