JEE PHYSICS MCQ: COMMUNICATION SYSTEMS

1 Hard

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Application +4 | -1

Calculate the phase velocity of electromagnetic wave having electron density and frequency of D-layer, N=400 electron

c{c^{ - 1}},v = 200\,kHz

View answer and explanation

Correct option: C

6.9 \times {10^8}\mathrm{m}{\mathrm{s}^{ - 1}}

The correct answer is C (

6.9 \times {10^8}\mathrm{m}{\mathrm{s}^{ - 1}}

). The phase velocity of an electromagnetic wave in a medium is calculated using the refractive index, which depends on the electron density and frequency.

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