A biconvex lens is formed by using two plano-convex lenses as sho… | JEE Main 2026 Physics PYQ

MCQMediumJEE Main 2026 · 28 January, Shift 2Refraction & Lenses

A biconvex lens is formed by using two plano-convex lenses as shown in the figure. The refractive index and radius of curvature of surfaces are also mentioned. When an object is placed on the left side of the lens at a distance of $30 \, \text{cm}$ , the magnification of the image will be:

Composite biconvex lens made from two plano-convex lenses, left half marked mu equals 1.5 with radius 15 cm, right half marked mu equals 1.2 with radius 12 cm, symmetric vertical lens outline shown.

A
$-2.5$
B
$+2.5$
C
$+2$
D
$-2$

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