Question

A coordinate axis as shown below is kept infront of a converging lens at a distance $2f$ from it where $f$ is the focal length of the lens, what is the approximate shapeof the image as seen by an observer on the other side of the lens at a distance $3f$ from it. Assume that $x-\text{axis}$ is along the principle axis of the lens

• A.
• B.
• C.
• D.

Answer 1

The correct option is C

When an object is placed at a distance of $2f$ from the convex lens image, image formed is real, inverted and of same size.

For the given coordinate axis,
Image of $x-$axis will not alter from original sense as $x-$ axis is principle axis of lens, while image of $y,z-$axis are inverted