During refraction of light, which of the following quantities does not change?

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Velocity

Amplitude

Frequency

answer is D.

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Detailed Solution

Concept- When the incident ray of light bends or changes direction when it passes from one medium to another medium is known as refraction of light.
1.The velocity of the ray of light changes when it undergoes refraction.Hence, the option A is incorrect.
2.The symbol λ shows the wavelength of the ray of light. The speed of the light beam is exactly proportional to its wavelength. When the medium through which light travels changes, so does the light's velocity. Hence, the wavelength of the light also changes when it undergoes refraction. option 2 is incorrect.
3.When a ray of light passes from one medium to the other medium -the quantities related with the ray of light such as velocity, wavelength, amplitude changes and the frequency of the wave remains the same. Therefore, the frequency of the light does not change on its refraction.
Hence, the correct option is 4 – Frequency.

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