Question

monochromatic light of wavelength 600 NM enters from air into glass medium of refractive index 1.5 the wavelength of refracted light inside the glass is​

Answer 1

answer : 400 nm

explanation : we know, velocity of wave = wavelength of wave × frequency of wave

or, $v=\lambda\times f$

as you know, light shows dual nature. light and wave.

when light is wave .

then, velocity of light = wavelength × frequency.......(1)

we also know, velocity of light depends of refractive index of medium. velocity of light is inversely proportional to refractive index of medium.

from expression (1), wavelength also depends on refractive index of medium. it is also inversely proportional to refractive index of medium.

so, $\boxed{\bf{\lambda=\frac{\lambda_0}{\mu}}}$

here, $\lambda_0=600nm,\mu=1.5$

so, $\lambda=\frac{600}{1.5}=400nm$