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The waves related to telecommuni-cation ...

The waves related to telecommuni-cation are-

A

visible light

B

infrared

C

ultraviolet

D

microwave

Text Solution

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The correct Answer is:
D
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NARAYNA-COMMUNICATION SYSTEM-C.U.Q
  1. Audio signal cannot be transmitted because

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  2. The examples of broadcast are (A) radio (B) television (C) telep...

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  3. The waves related to telecommuni-cation are-

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

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  5. Long distance short-wave radio broadcasting uses

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

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  7. Advantage of HF transmission is (A) that the length of antenna is sm...

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  8. The intensity of the ground waves decrease with increase of distance d...

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  9. High frequency waves are

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  10. As the e.m waves travel in free spaces

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  11. The electromagnetic waves of frequency 80 MHz and 200 MHz

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  12. The better propagation mode to propagate television frequency and rada...

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  13. Micro wave link repeaters are typically 50 km apart

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  14. Attenuation of ground waves is due to (1) Diffraction effect (2) R...

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  15. The ground wave eventually disappears, as one moves away from the tran...

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  16. The range of ground wave transmission can be increased by

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

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

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  19. When a sky wave is reflected onto the ground

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

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