Question

The refractive indices of glass and water with respect to air are 3/2 and 4/3 respectively. The refractive index of water with respect to glass is :

• A. $8/9$
• B. $9/8$
• C. $1/2$
• D. $2$

Answer 1

Answer: (A)

$8/9$

Refractive Index of water with respect to glass
$=\frac{\text{Refractive index of water}}{\text{Refractive index of glass}}$
$=\frac{4/3}{3/2}$
$=\frac{8}{9}$