Question

If the refractive indices of turpentine and water with respect to air are 1.8 and 1.3 respectively, then the refractive index of turpentine with respect to water will be:

• A. $\frac{5}{3}$
• B. $\frac{18}{13}$
• C. $2.8$
• D. $\frac{5}{4}$

Answer 1

Answer: (B)

$\frac{18}{13}$

${}^w{\mu }_t=\frac{{\mu }_t}{{\mu }_w}$
$=\frac{1.8}{1.3}=\frac{18}{13}$