HC Verma Chapter 18 Problem 4 – Apparent depth in water

Given

Object 12 cm below water n=4/3

Find

Apparent depth

Formula

Apparent depth = real depth / n

Solution

12 / (4/3) = 12 x 3/4 = 9 cm

Answer

9 cm

Diagram / Concept

Object appears closer when viewed from less dense medium

Notes

Valid for near-normal viewing