Question

d. If the angle between the incident ray and the reflected ray is 60°, the angle of
reflection is
e. If the angle of incidence is
the incident ray strikes the surface
normally.​

Answer 1

Answer:

d. 30 degrees. This is because "the angle between incident ray and reflected ray" actually means, angle of incidence+angle of reflection. Since angle of incidence=angle of reflection,angle of incidence =(60/2)=39.

e. If the incident ray makes 90 degrees with the surface, it will make 0 degrees with the normal. So, the incident angle will be 0 and the reflected angle will also be 0.

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