Question

A convex lens forms a real and inverted image of a needle at a disrance of 5o cm from it . what is the object distance if the size of image is same as object size . also find the power of lense

Answer 1

Given,
I = O —>1
We know that,
$\frac{i}{o} = \frac{v}{u}$
From eq. 1,
v = u
Therefore,
Object distance(u) = (-50)cm.



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Answer 2

Given,

I = O —>1

We know that,

From eq. 1,

v = u

Therefore,

Object distance(u) = (-50)cm.