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In space communcation , the information...

In space communcation , the information can be passed from on place to another at a distance of 100 km in

A

`1 s `

B

`0.5` s

C

`0.03` s

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
D
`t = ("distance")/("velocity")`
` = (100 xx 10^(3))/(3 xx 10^(8))`
` = 0.33 " "10^(-3)` sec
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NIKITA PUBLICATION-COMMUNICATION SYSTEMS-Multiple Choice Questions (Space communication )
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  2. Through which mode of propagation, the radio waves can be sent from on...

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

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

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  6. The polarisation of an electromagnetic wave is determined by

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  7. Frequencies in the UHF range normally propagate by means of:

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  8. An antenna is a device

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  9. The frequency of signals up to 1.5 MHz can be propagated using

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  10. Space wave propagation is used in (a) microwave communication (b) ...

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  11. The Ionosphere reflects the

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  12. Which of the following is not a transmission media used in communicat...

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  13. In which frequency range, space waves are normally propagated?

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  14. While tuning in a certain broad cast station with a receiver, we are a...

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  15. If the frequency of E.M radiations is halved then the energy of EM ra...

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  16. The frequency of a wave propagating in D-region having refractive inde...

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  17. The ground wave communication cannot be occur above a distance of

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  19. For the propagation of ground the aerials must be

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  20. Audio signals cannot be directly transmitted into to space because

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