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Two mirrors at an angle $\theta^{\circ}$ produce 5 images of a point. The number of images produced when $\theta$ is decreased to $\theta^{\circ}-30^{\circ}$ is
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Verified Answer
The correct answer is:
11
Hints: No. of images $=5$
$\therefore \theta=60^{\circ}$
New angle $=\theta-30^{\circ}=30^{\circ}$. No of images $=\frac{360^{\circ}}{30^{\circ}}-1=11$
$\therefore \theta=60^{\circ}$
New angle $=\theta-30^{\circ}=30^{\circ}$. No of images $=\frac{360^{\circ}}{30^{\circ}}-1=11$
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