JEE Previous Year Question

An electromagnetic wave of frequency 3GHz enters a dielectric medium of relative electric permittivity 2.25 from vacuum. The wavelength of this wave in that medium will be ____ cm

Topic: JEE PYQ

Answer: 667. Full step-by-step solution below.

Correct answer: 667

Solution

(667)
in vacuum


Where refractive index

Assuming non-magnetic material


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