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An electromagnetic wave of frequency v=3...

An electromagnetic wave of frequency `v=3.0 MHz` passes from vacuum into a dielectric medium with permittivity `epsilon=4.0`. Then

A

Wavelength is doubled and frequency unchanged

B

Wavelength is doubled and frequency becomes half

C

Wavelength is halved and frequency remains unchanged

D

Wavelength and frequency both remains unchanged

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The correct Answer is:
C
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