CBSE BOARD XII, asked by thekingnagaabhi, 5 hours ago

A convex lens of power 1D forms an image which is diminished by 4times. Find image and object distance​

Answers

Answered by felixmanoj1311
0

Same size of image is formed by a convex lens only when the object is placed at a distance u=2f from the optical center and image is also formed at distance 2f on other side of lens.

⟹2f=50

⟹f=25cm

P = 1/f(m) = 1/0.25

⟹P=+4D

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