NEET Exam Model Paper 7

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Question : 34 of 180

Marks: +1, -0

An electromagnetic wave of frequency 3 MHz passes from vacuum into a dielectric medium with permittivity εr=4 and µr=1, then

the wavelength and frequency both remain unchanged
the wavelength is doubled and the frequency remains unchanged
the wavelength is doubled and the frequency becomes half
the wavelength is halved and the frequency remains unchanged

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