Question

Refer to the image shown to answer the question.

if a light ray strikes the shiny surface at 70 degrees, what is the measurement of the reflected ray?

A. 170 degrees

B. 110 degrees

C. 70 degrees

D. 10 degrees

Answer 1

The measurement of the reflected ray will be 110 degrees.

Step-by-step explanation:

It is given that, a light ray strikes the shiny surface at 70 degrees.

From the given figure, the angle between the incident ray and the surface is 70°. So, the angle between the incident ray and the normal will be 90° - 70° = 20°.

From the laws of reflection, the angle of incidence is equal to the angle of reflection.

So, the angle between the normal and the reflected ray will be 20°. Hence, the measurement of the reflected ray will be 110°.

Hence, the correct option is (B) " 110 degrees ".

Answer 2

It would be B. Because every angle has to add up to 180 degrees. 180-70 would give you 110