Question

why does the frequency remains constant, when a ray of light enters from one medium to another ???​

Answer 1

ANSWER

The frequency of light remains same because it depends on the source of light . But the wavelenght and speed vary because they depend on the medium through which light passes................

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Answer 2

Answer:

Although the wave slows down, itsfrequency remains the same, due to the fact that its wavelength isshorter. When waves travel fromone medium to another thefrequency never changes. As waves travel into the densermedium, they slow down and wavelength decreases.