A \( 16 \mathrm{~cm} \) long image of an object is formed by a conv...

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A \( 16 \mathrm{~cm} \) long image of an object is formed by a convex lens on a screen placed normal to its principal axis. On moving the lens towards the screen, without changing
\( \mathrm{P} \) the positions of the object and the screen, a \( 9 \mathrm{~cm} \) long image is formed again on the

W screen. The size of the object is:
(A) \( 9 \mathrm{~cm} \)
(B) \( 11 \mathrm{~cm} \)
(C) \( 12 \mathrm{~cm} \)
(D) \( 13 \mathrm{~cm} \).
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