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The region that contains free electrons,...

The region that contains free electrons, negative ions and positive ions is

A

isosphere

B

mesosphere

C

ionosphere

D

stratosphere

Text Solution

Verified by Experts

The correct Answer is:
C
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NIKITA PUBLICATION-COMMUNICATION SYSTEMS-Multiple Choice Questions (Space communication )
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  2. One way communication is called

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  3. The region that contains free electrons, negative ions and positive io...

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  4. Electromagnetic waves of frequency ……. are reflected from ionosphere.

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  5. Because of tilting, which waves finally disappear?

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  6. Temperature of troposphere decreases ….. ^(@)C//k.m.

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  7. When an electromagnetic wave entres an ionised layer of enrth's aatmos...

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  8. In which of the region of earth's atmosphere temperature decreases wit...

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  9. In earth's atmosphere for F(1)-layer , the virutal height and critic...

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  10. In earth's atmosphere , for F(2) - layer, the virtual height and crit...

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  11. As the height of satellite orbit gets lower, the speed of the satel...

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  12. An electron oscillating with a frequency of 3xx10^6 Hz, would generate...

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  13. If three wave no atmosphere, the average temperature on the surface of...

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  14. When an electromagnetic waves enter the ionised layer of ionosphare, ...

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  15. Ultraviolet spectrum can be studied by using a

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  16. When electromagnetic waves enter the ionised layer of ionosphere, then...

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  17. The absorption of radiowaves by the atmosphere depends upon

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  18. The ozone layer in the atmosphere absorbs

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  19. Out of the following the radiation with lowest frequency is

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  20. Height of troposphere from ground surface is …… km.

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