A monochromatic laser beam in air strikes a highly polished, stationary plane mirror. The angle between the incident ray and the mirror’s normal at the point of contact is θi=37∘.
(a) Determine the angle that the reflected ray makes with the mirror’s normal.
(b) Calculate the angle between the incident ray and the reflected ray.
(c) Express the angle found in part (a) in radians, giving your answer to three significant figures.
(d) Describe whether the wavelength, frequency, and speed of the laser light change upon reflection, and justify your answer.