refer to the image shown to answer the question. if a light ray is reflected off the shiny surface at 170…

refer to the image shown to answer the question. if a light ray is reflected off the shiny surface at 170 degrees, at what angle did the light ray first strike the surface? 170 degrees 70 degrees 110 degrees 10 degrees

refer to the image shown to answer the question. if a light ray is reflected off the shiny surface at 170 degrees, at what angle did the light ray first strike the surface? 170 degrees 70 degrees 110 degrees 10 degrees

Answer

Explanation:

Step1: Recall law of reflection

The angle of incidence is equal to the angle of reflection. The angle of reflection is measured from the normal to the surface.

Step2: Identify normal - related angles

The normal is at 90 degrees to the surface. The reflected ray is at 170 degrees from the surface. So the angle of reflection from the normal is (170 - 90=80) degrees.

Step3: Determine angle of incidence

Since the angle of incidence = angle of reflection, the angle of incidence from the normal is also 80 degrees. So the angle at which the light ray strikes the surface is (90 - 80 = 10) degrees.

Answer:

10 degrees