Question

If two mirrors are inclined at some angle and an object is placed between the mirrors and there are $7$ images formed for an object, then the angle between the mirrors is

• A. $54^{\circ }$
• B. $45^{\circ }$
• C. $60^{\circ }$
• D. $64^{\circ }$

Answer 1

Answer: (B)

$n=\frac{360^{\circ }}{\theta }-1=7$
$\Rightarrow \frac{360^{\circ }}{\theta }=8$
$\theta =45^{\circ }$