JEE Main 2023PhysicsCommunication SystemMediumMCQ

JEE Main 2023 — Communication System Question with Solution

JEE Main 2023 (08 Apr Shift 1)

Question

A TV transmitting antenna is 98 m high and the receiving antenna is at the ground level. If the radius of the earth is 6400 km, the surface area covered by the transmitting antenna is approximately:

Choose an option

Show full solutionCorrect option: B
Correct answer
B3942 km2

Step-by-step explanation

The given data is 

H=98 m

R=6400 km

The line of sight formula for an antenna is 

d=2RH

⇒Area =πd2=π×2×R×h=2×6400×98×10-3×π=3940 km2

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About this question

This is a previous-year question from JEE Main 2023, covering the Communication System chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.