Question

An object is placed at a distance of 12 cm from a convex lens. It forms a real image four times than the object. The distance of the image formed from the lens is

Answer 1

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Answer 2

Explanation:

focal length of convex lens (f) = 8cm

object distance (u)=12cm

using lens formula=1/v-1/u=1/f

therefore,1/v-1/-12=1/8

v=24cm

hence,the image formed is real and inverted