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Communication Systems

Q1:

Which of the following statements is correct?

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

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

C All lens have positive focal power

D All lens have negative focal power

ANS:A - Convex lens has positive focal power and concave lens have negative focal power

No answer description is available.



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