A) 10 cm
B) 20 cm
C) 40 cm
D) 15 cm
Correct Answer: B
Solution :
\[\frac{1}{f}=\,(\mu -1)\,\left( \frac{1}{{{R}_{1}}}-\frac{1}{{{R}_{2}}} \right)\] = \[(1.5-1)\,\left( \frac{1}{10}+\frac{1}{10} \right)=\frac{1}{10}\] Þ f = 10 cm \ Radius of curvature of concave mirror = 2f = 20 cm.You need to login to perform this action.
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