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Physics-CBSE-class-10-->View question

## A concave lens of focal length 15 em forms an image 10 em from the lens. Calculate -2008 CBSE Physic class 10

(i) the distance of the object from the lens
(ii) the magnification for the image formed
(iii) the nature of the image formed

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focal length of concave lens (OF1), f=-15cm
Image distance, v=-10cm
According to the lens formula,

The negative value of u indicates that the object is placed 30 cm in front of the lens. This is shown in the following ray diagram.

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