Question

three factors which do not affect the speed
State the laws of reflection
Calculate the angle of incidence
ܠܠܠܠܠ
120°​

Answer 1

Answer:

1) Factors not affecting the speed:

temperature, pressure,density

2)Law of reflection:

i) The angle of incidence is equal to the angle of reflection (i = r)

ii) The incident ray, the normal to the mirror at the point of incidence and the reflected ray, all lie in the same plane.

3) angle of incidence = angle of reflection

= 120°