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While reading the book a man keeps the p...

While reading the book a man keeps the page at a distance of 2.5 cm from his eye. He wants to read the book by holding the page at 25 cm. What is the nature of spectacles one should advice him to use to completely cure his eye sight ?

A

Convex lens of focal length 25 cm

B

Concave lens of focal length 25 cm

C

Convex lens of focal length 2.5 cm

D

Concave lens of focal length 2.5 cm.

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