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. 1:01
• B. $\mu :1$
• C. 1: ${{\mu }^{2}}$
• D. $1 :\mu$

Answer 1

Answer: (B)

$\mu :1$

Answer 2

Since, from the formula $\lambda =\frac{c}{v}$ hence, $\frac{{{\lambda }_{a}}}{{{\lambda }_{g}}}=\frac{{{c}_{a}}}{{{c}_{g}}}=\mu =\mu :1.$