Draw ray diagrams showing the image formation by a concave lens when an object is placed at the focus of the lens.

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Solution

Image formation by a concave lens when an object is placed at the focus of the lens:
AB is the object, placed at focous.
The image will be formed at infinity.
The image formed will be virtual and erect.

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Question 33
Draw ray diagrams showing the image formation by a concave lens when an object is placed

(a) at the focus of the lens
(b) between focus and twice the focal length of the lens
(c) beyond twice the focal length of the lens

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Draw ray diagrams showing the image formation by a concave lens when an object is placed at the focus of the lens.

Image formation by a concave lens when an object is placed at the focus of the lens:AB is the object, placed at focous.The image will be formed at infinity.The image formed will be virtual and erect.

Image formation by a concave lens when an object is placed at the focus of the lens:
AB is the object, placed at focous.
The image will be formed at infinity.
The image formed will be virtual and erect.