Question

the focal length of a convex lens is 15 cm what should be the object to get real image equal to the size of object​

Answer 1

Answer:

So in order to obtain a real image and of equal size, the object has to be placed at the center of curvature of the lens.

So, C(center of curvature) = 2 F

=2 x 15

= 30 cm

Explanation:

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