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Home Questions 4UEQY63R8C
Target Exam

CUET

Subject

Physics

Chapter

Communication

Question:

Which of the following is true ?

Options:

A ground receiver station is receiving a signal at 6 MHz transmitted from a ground transmitter at a height of 300 m located at a distance of 100 km. It is coming via space wave communication. [Radius of earth = 6 x 106 km]

A geostationary satellite should be at a height nearly 36000 km above the equator of earth.

Moon can be used as a communication satellite.

None of the above.

Correct Answer:

A geostationary satellite should be at a height nearly 36000 km above the equator of earth.

Explanation:
  • Maximum distance covered by space wave communication is : d = \(\sqrt { 2hR}\) = \(\sqrt { 2*300*6*10^{6}}\) = 60 km
  • Moon can NOT be used as a communication satellite because it has no electronic equipments.

CUET Questions