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The energy picked up by a parabolic antenna is concentrated at the ________

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The energy picked up by a parabolic antenna is concentrated at the ________

(a) edges

(b) center

(c) corners

(d) focus

I got this question during an interview.

Query is from Practical Aspects of Sampling topic in chapter Multiplexing & Sampling of Bandpass Signal of Analog Communications

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Best answer
Right answer is (d) focus

Explanation: A parabolic antenna is one with parabolic reflector. Energy picked up by a parabolic antenna is concentrated at the focus.

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