Section C: Give a short answer to the question given below.
(i) An object of \(8\ cm\) height is placed at a distance of \(18\ cm\) from the optical centre of a concave lens of focal length \(18\ cm\). Calculate (1) image distance and (2) the magnification in this case.
(ii) Compare the values of magnification obtained by a concave lens and a convex lens when both the lenses form virtual images.
(ii) Compare the values of magnification obtained by a concave lens and a convex lens when both the lenses form virtual images.
(i) (1) The image is formed the lens.
The image distance is \(cm\).
(2) The magnification of the lens is \(cm\).
The formed image is .
(ii) The magnification of the concave lens is always and the magnification of the convex lens is , when both the lenses form virtual images.