concave lens always forms virtual image when object is placed any point on principal axis. why?
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Point on principal axis why object is placed any point concave lens always from virtual image when object ...
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Because a concave lens is always diverging in nature and hence the rays never actually meet after the refraction and always diverge.
Explanation:
Concave lens is diverging lens which has its surfaces curved inward.
The rays after following the laws of refraction always diverge and never meet at any point.
The object placed anywhere on the side of a concave lens will always lead to a smaller image than the object, the image is formed by tracing back the divergent rays which will always meet on the same side as that of object. Thus the nature of the image formed is virtual, erect and on the same side of the object.
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