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

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

NTA AbhyasNTA Abhyas 2022

Solution:

$n=\frac{360^{o}}{\theta ^{o}}-1$
$\therefore $ $3=\frac{360^{o}}{\theta ^{o}}-1\Rightarrow 4\theta ^{o}=360^{o}\Rightarrow \theta ^{o}=90^{o}$ .