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A mirror is placed at an angle of $30^{\circ}$ with respect to y-axis (see figure). A light ray travelling in the negative y-direction strikes the mirror. The direction of the reflected ray is given by the vector
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The correct answer is:
$\sqrt{3 \hat{i}}-\hat{j}$
Incident Ray $=-\hat{j}$
Reflected Ray
vector $\Rightarrow \frac{\sqrt{3}}{2} \hat{i}-\frac{1}{2} \hat{j}$
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