Q220 / 225 · JEE Main 2003 · Physics

To get three images of a single object, one should have two plane mirrors at an angle of

  • A
    $60^{\circ}$
  • Correct answer
    B
    $90^{\circ}$
  • C
    $120^{\circ}$
  • D
    $30^{\circ}$

Solution

According to Image formula $\mathrm{n}=\frac{360}{\theta}-1 \Rightarrow 3=\frac{360}{\theta}-1$ $\Rightarrow \frac{360}{\theta}=4 \Rightarrow \theta=\frac{360}{4}=90$

Hence, the correct answer is option: 'B'.

Relevant Questions