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For sky wave propagation of a 10MHz sign...

For sky wave propagation of a 10MHz signal, what should be the minimum electron density in lonosphere?

A

`~1.2 xx 10^(12) m^(-3)`

B

`~ 10^(6) m^(-3)`

C

`~ 10^(14) m^(-3)`

D

`~ 10^(22) m^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
D
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ALLEN-SEMICONDUCTORS-Part-3(Exercise-1)
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  5. The process of superimposing signal frequency (i.e., audio wave) on th...

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  6. In an amplitude modulated wave for audio frequency of 500 cycles/secon...

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  7. If there were no atmosphere, the average temperature on the surface of...

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  8. The T.V. transmission tower in Delhi has a height of 240m. The distanc...

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  9. Which of the following is used to produce radio waves of constant ampl...

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  10. The maximum distance upto which TV transmission from a TV tower of hei...

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  11. For sky wave propagation of a 10MHz signal, what should be the minimum...

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  12. In short wave communication, waves of which of the following frequenc...

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  13. For sky wave propagation of a 10MHz signal, what should be the minimum...

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  14. In frequency modulation

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  15. Range of frequencies alotted for commerical FM radio broad cast is

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  16. Sound produced by a tining fork is a sort of :-

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  17. The space waves which are affected seriously by atmospheric condition ...

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  18. Which of the following is not a transducer?

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  19. A anetenna is of height 500 m. What will be its range (Radio of the ea...

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  20. In amplitude modulation determine the total maximum transmitted power,...

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