Q138 / 180 · COMEDK 2014 · Physics

A man stands symmetrically between two large plane mimors fixed to two adjacent walls of a rectangular room. The number of images formed are

  • A
    4
  • Correct answer
    B
    3
  • C
    2
  • D
    6

Solution

Number of images when an object is placed symmetrically between plane mirrors inclined at an angle $\theta$, is given as $$ n=\frac{360}{\theta}-1 $$ Here, $$ \begin{array}{ll} \text { Here, } & \theta=90^{\circ} \\ \therefore & n=\frac{360}{90}-1=4-1=3 \end{array} $$

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

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