MPSC PYQScienceLightenglish

22) What is the power of a lens if the focal length of a concave mirror is 20cm ? 1) 1 D 2) 2.5 D 3) 5 D 4) None

A.1 D
B.2.5 D
C.5 D
D.None

Correct answer: C

Source paper

Science: Light

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