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A radar has a power of 1 Kw and is opera...

A radar has a power of 1 Kw and is operating at a frequency of 10 GHz. It is located on a mountain top of height 500 m. The maximum distance upto which it can detect object located on the surface of the earth (Radius of earth = `6.4 xx 10^(6)` m) is

A

80 km

B

16 km

C

40 km

D

64 km

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The correct Answer is:
A
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AAKASH SERIES-COMMUNICATION SYSTEM -LECTURE SHEET (LEVEL - I) (MAIN) (EXERCISE - II) (Straight Objective & More than one Correct Answer Type Questions)
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  4. A radio station has two channels. One is AM at 1020kHz and the other i...

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  7. A TV tower has a height of 75m. What is the maximum distance upto whic...

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  8. It a carrier wave of 1000 kHz is used to carry the signal, the length ...

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  9. A radar has a power of 1 Kw and is operating at a frequency of 10 GHz....

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  13. The maximum distance upto which TV transmission from a TV tower of hei...

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  14. A TV transmission tower has a height of 240m. Signals broadcast from t...

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  15. The maximum distance between the transmitting and receiving TV towers ...

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  16. A T.V. transmitting antenna is 128 m tall . If the receiving antenna i...

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  17. If height of transmitting tower increases by 21% then the area to be c...

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  18. The power of transmitter 19 kW. The power of the Carrier wave is, if t...

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  19. The power of a AM transmitter is 100 W. If the modulation index is 0.5...

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