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If the TV telecast is to cover a radius...

If the TV telecast is to cover a radius of 120 km ( Given , the radius of the earth = 6400 km ), the height of the transmitting antenna is

A

1280 m

B

1125 m

C

1560 m

D

79 m

Text Solution

Verified by Experts

The correct Answer is:
B
As ` d=sqrt(2hR)`
`implies h=(d^(2))/(2R) =((120 xx 1000)^(2))/(2 xx 6400xx 1000)=1125m`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-COMMUNICATION SYSTEM-Exercise 1
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  7. Match the following column I and Column II

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  9. In process of amplitude modulation of signal to be transmitted . S...

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  10. In amplitude modulation, carrier wave frequencies are:

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  11. In a detector, output circuit consists of R = 10kOmega and C = 100 p F...

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  12. For efficient transmission, transmitting antenna has length comparable...

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  13. A radio transmitter radiates 1 kW power at a wavelength 198.6 m. How m...

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  14. A 100 m long anteena is mounted on a 500 m tall building. The complex ...

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  15. A 1000 kHz carrier wave is modulated by an audio signal of frequency r...

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  16. In frequency modulation

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  17. In frequency modulated wave

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  18. A speech signal of 3 kHz is used to modulate a carrier signal of frequ...

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  19. A transducer , in communication system in a device that

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  20. In an amplitude modulated wave , the maximum amplitude is 10V and th...

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