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Long distance short-wave radio broadcast...

Long distance short-wave radio broadcasting uses

A

Ground wave

B

Ionospheric wave

C

Direct wave

D

Sky wave

Text Solution

Verified by Experts

The correct Answer is:
C
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Long distance short - wave radio frequency broadcasting uses:

Long distance radio broadcasts use short wave bands. Explain why?

A : Long distance radio broadcasts use short-wave bands. R : Ionosphere reflectes waves in these bands.

Statement 1: Long distance radio broadcasts use short wave bands. Statement 2: Short wavelength signals are reflected by the ionosphere.

Give reasons for the following: (i) Long distance radio broadcasts use short-wave bands. (ii) The small ozone layer on top of the stratosphere is crucial for human survival. (iii) Satellites are used for long distance TV transmission.

Why long distance radio broadcasts use shortwave bands?

NARAYNA-COMMUNICATION SYSTEM-C.U.Q
  1. The waves related to telecommuni-cation are-

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

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  3. Long distance short-wave radio broadcasting uses

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

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

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

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  7. High frequency waves are

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

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

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

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  11. Micro wave link repeaters are typically 50 km apart

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

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

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

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

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

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  17. When a sky wave is reflected onto the ground

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

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  19. Among the follwing frequencies one will be suitable for beyond-the hor...

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  20. Among the follwing , the waves which can penetrate the ionosphere are

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