MCQ
The position of $4^{th}$ image right to mirror $M_1$ is
  • A
    $69\,cm$ from $M_1$
  • B
    $48\,cm$ from $M_1$
  • $78\,cm$ from $M_1$
  • D
    $57\,cm$ from $M_1$

Answer

Correct option: C.
$78\,cm$ from $M_1$
c
${M_2}$ ${M_1}$
$15$ $6$
$27$ $36$
$57$ $48$
  $78$

$78\,cm$ from ${M_1}$

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