WBJEE · Physics · Ray Optics
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
- A 9
- B 10
- C 11
- D 12
Answer & Solution
Correct Answer
(C) 11
Step-by-step Solution
Detailed explanation
Hints: No. of images \(=5\) \(\therefore \theta=60^{\circ}\) New angle \(=\theta-30^{\circ}=30^{\circ}\). No of images \(=\frac{360^{\circ}}{30^{\circ}}-1=11\)
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