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Ray Optics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsRay Optics1 Mark
MCQ
An object $5 \mathrm{~cm}$ tall is placed $1 \mathrm{~m}$ from a concave spherical mirror which has a radius of curvature of $20 \mathrm{~cm}$ The size of the image is
  • A
    $0.11 \mathrm{~cm}$
  • B
    $0.50 \mathrm{~cm}$
  • ✓
    $0.55 \mathrm{~cm}$
  • D
    $0.60 \mathrm{~cm}$
✓

Answer

Correct option: C.
$0.55 \mathrm{~cm}$
$\frac{I}{O}=\frac{f}{(f-u)} \Rightarrow \frac{I}{+5}=\frac{-10}{-10-(-100)} \Rightarrow I=0.55 \mathrm{~cm}$

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