Question

Select One Correct Option from the following: A ray of light travelling in the direction $\frac{1}{2} (\hat{i} +\sqrt{3} \hat{j} )$ is incident on plane mirror. After reflection, it travels along $\frac{1}{2} (\hat{i} -\sqrt{3} \hat{j} )$. The angle of incidence is
(A) $30\°$
(B) $45\°$
(C) $60\°$
(D) $75\°$.

Answer 1

c option is correct.
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Answer 2

Select One Correct Option from the following: A ray of light travelling in the direction $\frac{1}{2} (\hat{i} +\sqrt{3} \hat{j} )$ is incident on plane mirror. After reflection, it travels along $\frac{1}{2} (\hat{i} -\sqrt{3} \hat{j} )$. The angle of incidence is

(A) $30\°$

(B) $45\°$

✔️ (C) $60\°$

(D) $75\°$.