(i)Define the following terms in the context of spherical mirrors (a) Pole (b) Centre of curvature (c) Principal axis (d) Principal focus (ii) Draw ray diagrams to show the principal focus of a (a) Concave mirror (b) Convex mirror (iii) Consider the following diagram in which M is a mirror and P is an object and Q is its magnified image formed by the mirror. State the type of the mirror M and one characteristic property of the image Q.
Answers
Answer:
(i) a. The centre of the spherical surface of the mirror, is called the pole of the mirror. It lies on the surface.
(i) b. The Center of Curvature of a spherical mirror is the point in the centre of the mirror which passes through the curve of the mirror and has the same tangent and curvature at that point.
(i) c. The principal axis of a spherical mirror is a line going through the center of the mirror that is exactly perpendicular (sometimes said "normal") to the surface of the mirror.
(i) d. The principal focus of a spherical mirror is a point on the principal axis of the spherical mirror at which, the light rays which are parallel to the principal axis actually converge (meet) or appear to diverge after reflection.
(ii) a. Concave Mirror
Explanation:
(i) a. The centre of the spherical surface of the mirror, is called the pole of the mirror. It lies on the surface.
(i) b. The Center of Curvature of a spherical mirror is the point in the centre of the mirror which passes through the curve of the mirror and has the same tangent and curvature at that point.
(i) c. The principal axis of a spherical mirror is a line going through the center of the mirror that is exactly perpendicular (sometimes said "normal") to the surface of the mirror.
(i) d. The principal focus of a spherical mirror is a point on the principal axis of the spherical mirror at which, the light rays which are parallel to the princi palaxis actually converge (meet) or appear to diverge after reflection.