Question

Refractive index of dense flint glass is 1.65 and that of alcohol is 1.36 with respect to air. Then the refractive index of flint glass with respect to alcohol is

• A. $1.65\times 1.36$
• B. $\frac{1.36}{1.65}$
• C. $\frac{1.65}{1.36}$
• D. $\sqrt{\frac{1.65}{1.36}}$

Answer 1

The correct option is C

$\frac{1.65}{1.36}$

Step 1: Given data:

Refractive index of dense flint glass with respect to air,${\mu }_{ga}=1.65$

Refractive index of alcohol with respect to air, ${\mu }_{al.a}=1.36$

Step 2: Formula used:

The refractive index of flint glass with respect to alcohol, ${\mu }_{g.al}$=$\frac{Refractiveindexofdenseflintglass}{Refractiveindexofalcohol}=\frac{{\mu }_{g.a}}{{\mu }_{al.a}}$

Step 3: Calculation for the refractive index of flint glass with respect to alcohol:

${\mu }_{g.al}=\frac{{\mu }_{g.a}}{{\mu }_{al.a}}=\frac{1.65}{1.36}$

Hence, option (c) is correct.