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Question

A converging lens is used to produce an image of an object on a screen. What change is needed for the image to be formed nearer to the lens ?

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Solution

The correct option is **A** increase the distance of the object from the lens

As the image is found on screen , therefore image is real i.e. object is placed beyond the focal length of converging lens .

As the image is found on screen , therefore image is real i.e. object is placed beyond the focal length of converging lens .

Now , by lens equation

v=−uf−u+f (where v must be +ive)

it is clear from this equation , that v (distance of image from pole) will be smaller when we increase u (distance of object from lens) .

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