A sky wave with a frequency 55 MHz is incident on D-region of earth's atmosphere at 45^(@). The angle of refraction is (electorn density for D-region is 400 "electron"//cm_(3))

A sky wave with a frequency 55 MHz is incident on D-region of earth's

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 (electorn density for D-region is 400 "electron"//cm_(3))
Answer» `60^(@)` `45^(@)` `30^(@)` `15^(@)` Solution :`mu=sqrt(1-(80.6N)/(V^(2)))~~1` Also, `mu=(sini)/(sinr)` or `i=r=45^(@)`

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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 (electorn density for D-region is 400 "electron"//cm_(3))

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