1. A light ray strikes a mirror at an angle of 42° from the surface of the mirror. What angle does the reflected ray make with the normal
2. A ray of light hits a mirror at 27° from the normal. What is the angle between the reflected ray and the normal.
If it hits at 42 from the SURFACE that is 90-42 = 48 from the normal. The reflected ray will also be 48 from the normal.
27 + 27 = 54
42 and 27 degrees
To determine the angle the reflected ray makes with the normal, you need to consider the law of reflection. According to this law, the angle of incidence (the angle between the incident ray and the normal) is equal to the angle of reflection (the angle between the reflected ray and the normal).
In the first scenario, the light ray strikes the mirror at an angle of 42° from the surface of the mirror. Since the angle of incidence is given, we can conclude that the angle of reflection is also 42° since these angles are always equal.
Similarly, in the second scenario, the ray of light hits the mirror at an angle of 27° from the normal. Since the angle of incidence is given, the angle of reflection will also be 27° based on the law of reflection.