Question

why does a ray falling normally on a plane mirror ,retrace its path

Answer 1

Answer:

Explanation:

A ray of light falling normally on a plane mirror retraces its path on reflection. ... As angle of reflection (r)= angle of incidence =00, therefore, reflected ray goes along the normal. Hence, the ray retraces its path.

Answer 2

Answer:

A ray of light falling normally on a plane mirror retraces its path.

Explanation:

• When a ray is incident normally on a mirror, it falls parallel to the mirror.
• The angle of incidence is, therefore, i=0 degrees.
• Since the angle of incidence (A)=angle of reflection (R)=0 degrees.
• As a result, the reflected beam follows the normal.
• The beam thus reverses direction.
• The law of reflection is the idea that when light rays strike a smooth surface, the angle of incidence, the angle of reflection, and the normal to the surface all reside in the same plane.
• Having a flat reflective surface, a plane mirror is a type of mirror.
• The angle of incidence and angle of reflection is the same for light beams striking a planar mirror.

A normal light ray that hits a plane mirror retraces its path.

#SPJ2