Question

Monochromatic light is refracted from air into the glass of refractive index $\mu$ . The ratio of the wavelength of incident and refracted waves is

• A. 1 : $\mu$
• B. 1 : $\mu ^ { 2 }$
• C. $\mu$ : 1
• D. 1 : 1

Answer 1

Answer: (C)

$\mu$ : 1

Answer 2

$\lambda \propto \frac { 1 } { \mu } \Rightarrow \frac { \lambda _ { 1 } } { \lambda _ { 2 } } = \frac { \mu _ { 2 } } { \mu _ { 1 } } = \frac { \mu } { 1 }$