Which of the following statements is correct? – McqOptions

MCQOPTIONS

1.	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
Answer» B. Convex lens has negative focal power and concave lens have positive focal power

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