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Question
With the help of a diagram, explain why the image of an object viewed through a concave lens appears smaller and closer than the object.
Solution
If we place an object anywhere between optical center and infinity, then the refraction occurs as in the below diagram:
It is clear in the above ray diagram that the refracted rays meet a point within the focus. And also, this image virtual,erect and smaller than the object.
Thus, if an object is viewed through a concave lens, its image is appeared smaller and closer than the object.
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