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Height of troposphere from ground surfac...

Height of troposphere from ground surface is …… km.

A

`12 km`

B

`80 km`

C

`400 km`

D

` 50 km `

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The correct Answer is:
A
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NIKITA PUBLICATION-COMMUNICATION SYSTEMS-Multiple Choice Questions (Space communication )
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  2. Out of the following the radiation with lowest frequency is

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

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  4. A man can take pictures of those objects which are not fully visible t...

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  5. Troposphere reflect the waves having frequency from ……

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  6. Clouds and water vepours are present in the layer of atmosphere calle...

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  7. The EM waves when travel into different medium gets

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  8. Ultraviolet radiations is absorbed by:

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  9. Speed of electromagnetic waves is given

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  10. In space communication, the sound waves can be sent from one place t...

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  11. A.F.M. radio transmitter uses a tower of height 60 m for its antenna W...

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  12. The electromagnetic waves of frequency 2 MHz and 30 MHz are

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  13. Ground wave propagation is suitable for

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  14. Long distance short-wave radio broadcasting uses

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  15. When microwave signals follow the curvature of earth, this is known as...

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  16. Through which mode of propagation, the radio waves can be sent from on...

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  17. In space communcation , the information can be passed from on place ...

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  18. What will be the area of reception of the signals transmitted by the T...

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  19. The sky wave propagation is suitable for radiowaves of frequency

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  20. The polarisation of an electromagnetic wave is determined by

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