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Convex lens has negative focal power and concave lens have positive focal power.

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Convex lens has negative focal power and concave lens have positive focal power.

(a) True

(b) False

I had been asked this question during an online interview.

This intriguing question originated from Applications of SSB topic in chapter SSB Modulation of Analog Communications

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The correct answer is (b) False

The explanation is: Convex lens has positive focal power and concave lens have negative focal power.

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