JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Application +4 | -1

A monochromatic light wave with wavelength

\lambda_{1}

and frequency

v_{1}

in air enters another medium. If the angle of incidence and angle of refraction at the interface are

45^{\circ}

and

30^{\circ}

respectively, then the wavelength

\lambda_{2}

and frequency

v_{2}

of the refracted wave are:

View answer and explanation

Correct option: D

\lambda_{2}=\frac{1}{\sqrt{2}} \lambda_{1}, \, v_{2}=v_{1}

Option D (

\lambda_{2}=\frac{1}{\sqrt{2}} \lambda_{1}, \, v_{2}=v_{1}

) is correct because the frequency of light remains the same when it enters another medium, while the wavelength changes according to the refractive index.

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