Question

When an electromagnetic wave passes through matter, which of the following factors stay the same? (a)...

When an electromagnetic wave passes through matter, which of the following factors stay the same?

(a) Amplitude (b) Frequency (c) Wavelength (d) More than one (specify: _____ , _____ , _____ ) (e) None of them

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Answer #1

An electromagnetic wave doesn't require a medium to travel. However, when it passes through a matter, its speed, wavelength and amplitude gets changed, though the frequency remains same.

Answer : (b)

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