The area to be covered for T.V. telecast

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Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

The area to be covered for T.V. telecast is doubled, then the height of transmitting antena (T.V. tower) will have to be:

Options:

doubled

halved

quardupled

kept unchanged

Correct Answer:

doubled

Explanation:

The area of transmission surrounding the T.V. tower

A = $\pi d^2=\pi(2 \mathrm{hRe})$

A $\propto$ h

Hence the correct answer will be (A).