Question

Which of the following quantities remain same when light goes
from one medium to another medium?
(a) speed (b) frequency (c) wave length (d) intensity​

Answer 1

I think it may be frequency

Answer 2

Light travels from a medium of refractive index 1.5 to another medium of refractive index 1.33 which physical quantity associated with light remains unchanged

The frequency of the light ray remains same when it travels from one medium to another because it depends on the source of light. But the wavelength and speed vary because they depend on the medium through which the light passes.

Explanation:

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