If a ray of light is incident on a plane mirror ( placed along X axis ) and the unit vector of the incident ray is given by $\frac{\hat{i}}{\sqrt{2}}-\frac{\hat{j}}{\sqrt{2}}$, then find the angle of reflection

• A

  ${30}^0$

• B

  ${45}^0$

• C

  ${60}^0$

• D

  ${37}^0$