Describe the following terms in connection with spherical mirrors.
a. Pole b. Principal focus
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Answers
Answer:
a)Pole: The middle point of the reflecting surface of a spherical mirror is called pole.
The letter P represents pole, MP = M’P.
b)Principal focus: The mid-point of CP is called focus (F). It is the point on the principal axis of a spherical mirror where all incident rays parallel to the principal axis meet or appear to diverge after reflection.
Explanation:
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Answer:
Pole:
The centre of the reflecting surface of a spherical mirror is a point called the pole.
It lies on the surface of the mirror.
The pole is usually represented by the letter P.
Principal focus:
A number of rays parallel to the principal axis are falling on a concave mirror.Observe the reflected rays.
They are all meeting/intersecting at a point on the principal axis of the mirror.
The principal focus is represented by the letter F.