Image formed by a convex Lens

Question

If an object is placed at the focal point of a convex lens, the image formed is said to be real and highly magnified.

My question is that if the image is formed at infinity, how can it be termed as highly magnified. Why is it not refered to as infinitely magnified?

Also, if the image is still refered to as highly magnified, then what would be the magnitude of magnification?

Thanks

Khalida Qureshi

Chetan Mandayam Nayakar · Accepted Answer

the standard theory of geometrical optics breaks down in this case. An image can be said to be formed only when different rays of light converge at a single point after passing through the lens. If object is placed at focus of convex lens, the rays emerging from the lens are parallel and do not converge at all. Therefore, one can say that no image is formed at all.

Modern Physics> Image formed by a convex Lens...

khalida qureshi , 14 Years ago

Chetan Mandayam Nayakar

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Modern Physics> Image formed by a convex Lens...

khalida qureshi , 14 Years ago

Chetan Mandayam Nayakar

LIVE ONLINE CLASSES

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