Question

Calculate the index of refraction of a liquid from the following into glass:
Reading for the bottom of an empty breaker : 11.324 cm
Reading for the bottom of the beaker, when partially filled with the liquid : 11.802 cm
Reading for the upper level of the liquid in the beaker : 12.895 cm

• A. 1.437
• B. 2.437
• C. 3.437
• D. 4.437

Answer 1

The correct option is A 1.437

Given: Reading for the bottom of an empty breaker : 11.324 cm, reading for the bottom of the beaker, when partially filled with the liquid : 11.802 cm, reading for the upper level of the liquid in the beaker : 12.895 cm

To find the refractive index of the liquid

Solution:

Real depth of the beaker = 12.895--11.324=1.571

Apparent depth = 12.895-11.802=1.093

Refractive index of the liquid = $\frac{\text{Real Depth}}{\text{Apparent Depth}}=\frac{1.571}{1.093}=1.437$