1.

A sky wave with a frequency 55 MHz is incident on D-region of earth's atmosphere at 45∘. The angle of refraction is (electron density for D-region is 400 electron/cm3)

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A sky wave with a frequency 55 MHz is incident on D-region of earth's atmosphere at 45. The angle of refraction is (electron density for D-region is 400 electron/cm3)



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