A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 24∘ (24 degrees) If the mirror is now rotated so that the angle of incidence increases by 4.0∘ (4.0 degrees), what is the new angle between the incident and reflected beams? Express your answer as a whole number and in degrees.

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Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.