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Question

# The physical sizes of the transmitter and receiver antenna in a communication system are-

A
Proportional to carrier frequency
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B
Inversely proportional to carrier frequency
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C
Independent of both carrier and modulation frequency
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D
Inversely proportional to modulation frequency
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Solution

## The correct option is B Inversely proportional to carrier frequencySize of antenna, l=λ4 ∵ λ=cf ⇒ l∝1f <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Hence, (B) is the correct answer.

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