Question

The refractive indices of water, glass and diamond are 1.33, 1.50 and 2.40 respectively. The refractive index of diamond relative to water and of glass relative to diamond respectively are nearly:

• A. 1.80, 0.625
• B. 0.554, 0.625
• C. 1.80, 1.6
• D. 0.554, 1.6

Answer 1

The correct option is A 1.80, 0.625

Given: ${\mu }_w=1.33$ ,${\mu }_g=1.5$ and ${\mu }_d=2.4$
Now, ${}_w{\mu }_d=\frac{{\mu }_d}{{\mu }_w}=\frac{2.4}{1.33}=1.80$
Further, ${}_d{\mu }_g=\frac{{\mu }_g}{{\mu }_d}=\frac{1.50}{2.4}=0.625$