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An object is kept in front of a lens of...

An object is kept in front of a lens of focal length-20 cm . Describe the nature of the image when the object distance is 25 cm.

Text Solution

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Since the focal length of the lens (-20cm) is negative , it is concave lens.
If an object is kept is 25 cm from the lens, the image will be virtual , erect and smaller than the object.
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