Question

a) State the laws of reflection.

b) What will be the angle of reflection if the incident ray makes an angle of 40⁰ with normal ?

c) What happens to the angle of incidence when the incident ray falls at normal?​

Answer 1

Answer:

a) The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

b) If the angle between the incident ray and mirror is 40 degree , then the angle of incidence will be 50 degree. Then the angle of reflection will 50 degree ( angle of incidence = angle of reflection).

c) 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.