A biconvex lens forms a real image of an object placed perpendicular to its principal axis. Suppose the radii of curvature of the lens tend to infinity. Then the image would
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a
Disappear
b
Remain as real image still
c
Be virtual and of the same size as the object
d
Suffer from aberrations
answer is C.
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Detailed Solution
1f=(μ−1)1R1−1R2 For biconvex lens R2=−R1 ∴1f=(μ−1)2R Given R=∞ ∴f=∞, so no focus at real distance