CUET Preparation Today
What happens when light is refracted into a medium? |
Both frequency and wavelength of light increase The wavelength increases and the frequency decreases The wavelength changes but the frequency remains unchanged The wavelength and frequency both remain unchanged |
The wavelength changes but the frequency remains unchanged |
The correct answer is Option (3) → The wavelength changes but the frequency remains unchanged When light is refracted into a medium, the speed of the light and the wavelength changes due to different optical properties of the new medium. $λ'=\frac{λ}{μ},v'=\frac{v}{μ}$ [$μ$ = Refractive index] and, $v=f.λ$ [f = frequency] $⇒f=\frac{v}{λ}=\frac{v'}{f'}$ |
