A pin is placed \( 10 \mathrm{~cm} \) in front of a convex lens of focal length \( 20 \mathrm{~c...

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A pin is placed \( 10 \mathrm{~cm} \) in front of a convex lens of focal length \( 20 \mathrm{~cm} \) and made of a material of refractive index 1.5. The
P convex surface of the lens farther away from the pin is

W silvered and has a radius of curvature of \( 22 \mathrm{~cm} \). Determine the position of the final image. Is the image real or virtual?
(1978)
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