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JEE Main 2-April-2025 Paper - Shift 2 — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEEJEE Main 2-April-2025 Paper - Shift 24 Marks
MCQ
Two identical objects are placed in front of convex mirror and concave mirror having same radii of curvature of 12 cm , at same distance of 18 cm from the respective mirrors. The ratio of sizes of the images formed by convex mirror and by concave mirror is :
  • A
    $1 / 2$
  • B
    2
  • C
    3
  • D
    $1 / 3$
✓

Answer

A. $1 / 2$
Image
Using $m=\frac{f}{u-f}$
$m_{1}=\frac{6}{18-6}=\frac{1}{2}$
Image
$\mathrm{m}_{2}=\frac{6}{18+6}=\frac{1}{4} \quad \therefore \frac{\mathrm{~m}_{2}}{\mathrm{~m}_{1}}=\frac{1}{2}$

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