A beam of monochromatic light is passing from one medium into another. Which one of the following quantities does not change?

A beam of monochromatic light is passing from one medium into another.

1.	A beam of monochromatic light is passing from one medium into another. Which one of the following quantities does not change?
A.	Wavelength
B.	Frequency
C.	Velocity
D.	Amplitude
Answer» C. Velocity

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A beam of monochromatic light is passing from one medium into another. Which one of the following quantities does not change?

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