14. An electromagnetic radiation of frequency n, wavelength λ, travelling with velocity v in air enters in a glass slab of refractive index (μ). The frequency, wavelength and velocity of light in the glass slab will be respectively ?

14. An electromagnetic radiation of frequency n, wavelength λ, travelling with velocity v in air enters in a glass slab of refractive index (μ). The frequency, wavelength and velocity of light in the glass slab will be respectively ?

(a) \( n, \frac{\lambda}{\mu}, \frac{\nu}{\mu} \)
(b) \( n, 2\lambda, \frac{v}{\mu} \)
(c) \( \frac{n}{\mu}, \frac{\lambda}{\mu}, \frac{v}{\mu} \)
(d) \( \frac{2\pi}{\mu}, \frac{\lambda}{\mu}, \frac{v}{\mu} \)

Answer :  (a) \( n, \frac{\lambda}{\mu}, \frac{\nu}{\mu} \)