Question

The refractive index of dense flint glass is 1.65 and for alcohol it is 1.36,with respect to air. What is the refractive index of the dense flint glass with respect to alcohol?

Answer 1

Solution :

⏭ Given :

✏ Refractive index of flint glass = 1.65

✏ Refractive index of alcohol = 1.36

⏭ To Find:

✏ Refractive index of flint glass wrt alcohol.

⏭ Formula:

✏ Formula of Refractive index of medium 2 wrt medium 1 is given by

$\star \: \underline{ \boxed{ \bold{ \sf{ \pink{ \eta_{21} = \frac{ \eta_2}{ \eta_1} }}}}} \: \star$

⏭ Calculation:

✏ Refractive index of flint glass wrt alcohol is given by

$\rightarrow \sf \: \eta_{ga} = \frac{ \eta_{glass}}{ \eta_{ alcohol}} \\ \\ \rightarrow \sf \: \eta_{ga} = \frac{1.65}{1.36} \\ \\ \rightarrow \: \underline{ \boxed{ \bold{ \sf{ \orange{ \eta_{ga} = 1.21}}}}} \: \star$

⏭ Additional information:

• Refractive index is unitless quantity.
• Refractive index is dimensionless quantity.