1.

An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. Find : (a) the position of image, and (b) the magnification of image.

Answer»

An object is placed at a distance of 20 cm in front of a concave lens of focal length 20 cm. Find :

(a) the position of image, and

(b) the magnification of image.



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