Physics - Geometrical Optics Question with Solution | TestHub

Image is inverted and enlarged (6 mm vs 3 mm), so the mirror is concave with $m=-2$

$|v|=2|u|$ and $|v|-|u|=30$ cm, giving $u=30$ cm, $v=60$ cm

$\frac{1}{f}=\frac{1}{30}+\frac{1}{60}$, so $f=20$ cm and $R=40$ cm

(A), (C), (D) correct; (B) wrong. Answer: (A), (C), (D)