A coin is placed in a tumbler, water is then filled in the tumbler to a height of 20 cm. If the refractive index of water is 4/3, calculate the apparent depth of the coin. [2 MARKS]
Problem: 2 Marks
Given:
Real depth =h=20cm
Refractive index =n=43
We know,
n=Real depthApparent depth
43=20Apparent depth
Therefore, Apparent depth =15cm