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

A sky wave with a frequency 55 MHz is incident on D-region of the eart

1.	A sky wave with a frequency 55 MHz is incident on D-region of the earth.s atmosphere at 45^(@). The angle of refraction is (electron density for D-region is 400 electron/c.c)
Answer» `60^(@)` `45^(@)` `30^(@)` `15^(@)` ANSWER :B

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

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