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Tamil Nadu Board of Secondary EducationHSC Science Class 12

Why are dish antennas curved? - Physics

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Question

Why are dish antennas curved?

Short Note

Solution

The dish antenna is curved so as it can receive parallel signal rays coming from the same direction. These parallel signal rays reflect from the parabolic dish and gathered at main antenna part. This increases the directivity of antenna and gives a sufficient amplitude signal.

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Chapter 6: Ray Optics - Evaluation [Page 50]

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Samacheer Kalvi Physics - Volume 1 and 2 [English] Class 12 TN Board
Chapter 6 Ray Optics
Evaluation | Q 1. | Page 50
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