A bi-convex lens is formed with two thin plano-convex lenses as shown in the figure. Refractive ...

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A bi-convex lens is formed with two thin plano-convex lenses as shown in the figure. Refractive index \( n \) of the first lens is \( 1.5 \) and that of the second lens is 1.2. Both the curved surfaces are of the same radius of curvature \( R=14 \mathrm{~cm} \).

For this bi-convex lens, for an object
\( \mathrm{P} \)
W distance of \( 40 \mathrm{~cm} \), the image distance will be
(2012)
(a) \( -280.0 \mathrm{~cm} \)
(b) \( 40.0 \mathrm{~cm} \)
(c) \( 21.5 \mathrm{~cm} \)
(d) \( 13.3 \mathrm{~cm} \)
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