1.

An incident ray makes an angle of 30° with the miror. What is the angle of incidence?​

Answer»

The INCIDENT ray will have an ANGLE of reflection of 30 degrees (made with a SURFACE normal to the mirror surface). Angle of INCIDENCE = 90 - angle made with the mirror surface= 90 - 60 = 30 degrees. Since, angle of incidence = angle of reflection = 30 degrees.



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