Question

74. Which one of the following
statements is not correct with
reference to reflection of light by a
plane smooth surface?
(1) Angle of incidence is the angle
between the incident ray and
the normal at the point of
incidence.
(2) Angle of reflection is the angle
between the reflected ray and
the plane of mirror.
(3) Angle of incidence - Angle of
reflection
(4) Incident ray, normal at the
point of incidence and reflected
ray all lie in the same plane.​

Answer 1

Answer:

2 is right answer

Explanation:

because it is not measured from mirror it measure from normal (mark as best ans) thanku

Answer 2

The statement that is not correct with reference to reflection of light by a

plane smooth surface is:

(2) The angle of reflection is the angle between the reflected ray and the plane of the mirror.

• When a ray of light is incident on a plane surface, it gets reflected.

• The angle with which the ray strikes the surface is equal to the angle with which it is reflected back.

• The angle of incidence is the angle between the incident ray and the normal at the point of incidence.

• Similarly, The angle of reflection is the angle between the reflected ray and the normal.

• All the three rays i.e. normal, incident ray and reflected ray lies on the same plane and at the same point.