A thin cylindrical rod of length 10 cm is placed horizontally on… | JEE Main 2023 Physics PYQ

MCQMediumJEE Main 2023 · 1 February, Shift 1Reflection & Spherical Mirrors

A thin cylindrical rod of length $10 \, \text{cm}$ is placed horizontally on the principle axis of a concave mirror of focal length $20 \, \text{cm}$ . The rod is placed in a such a way that mid point of the rod is at $40 \, \text{cm}$ from the pole of mirror. The length of the image formed by the mirror will be $\frac{x}{3}$ cm. The value of $x$ is _____.

A thin rod AB of length 10 cm lies horizontally on the principal axis, with its midpoint 40 cm from a concave mirror on the right.

Diagram showing rod AB of length 10 cm on the principal axis of a concave mirror, with positive direction marked rightward and 40 cm shown from midpoint to mirror pole.

A
$30$
B
$32$
C
$34$
D
$36$

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