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NTA Abhyas JEE Main2020PhysicsCommunication SystemPractice

If the area to be covered for TV telecast is doubled, then the height of transmitting antenna (TV tower) will have to be

Options

  1. ADoubled
  2. BHalved
  3. CQuadrupled
  4. D16 times

Correct answer

A. Doubled

Step-by-step solution

We know that d =   2 h R e A = π d 2 = 2 π h R e area proportional to the height of the antenna ⇒ A ∝ h

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