Question

. A fish seems to be at a depth of 75cm from the surface. What is the actual distance from the surface? (Refractive index of water is 1.33).​

Answer 1

Answer :

The answer is 100 cm.

Given :

• A fish is seems to be a depth of 75 cm.
• Refractive index of water = 4/3 or 1.33

To find :

• Actual distance from the 20 surface.

Step by Step Explanation :

Refractive index in terms of Real and Apparent depth can be be defined as :

$refractive \: index = \frac{real \: depth}{apparent \: depth}$

$\frac{4}{3} = \frac{real \: depth}{75}$

$real \: depth = 75 \times \frac{4}{3}$

real depth = 100 cm.

Hence, the actual depth of the actual distance from the surface of water is 100 cm.