Monochromatic light passes through a prism. C | vedclass

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(A) When light travels from one medium to another, its frequency $(f)$ remains constant because it is determined by the source of light.The speed of l

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speed and wavelength are different, but frequency remains same

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(A) When light travels from one medium to another, its frequency $(f)$ remains constant because it is determined by the source of light.The speed of light $(v)$ in a medium is given by $v = c/n$, where $c$ is the speed of light in vacuum and $n$ is the refractive index of the medium. Since the refractive index of the prism is greater than that of air $(n > 1)$, the speed of light decreases inside the prism.The relationship between speed, frequency, and wavelength $(\lambda)$ is $v = f \lambda$. Since $v$ decreases and $f$ remains constant, the wavelength $\lambda$ must also decrease inside the prism.Therefore, the speed and wavelength change, while the frequency remains the same.

Monochromatic light passes through a prism. Compared to that in air, inside the prism the light's

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