Which of the following has curved reflecting surface?

(a)

plane mirrors

(b)

spherical mirrors

(c)

simple mirrors

(d)

None of the above

The centre of a sphere of which the reflecting surface of a spherical mirror is a part is called

(a)

pole

(b)

centre of curvature

(c)

cradius of curvature

(d)

aperture

The imaginary line passing through the centre of curvature and pole of a spherical mirror is called

(a)

centre of curvature

(b)

pole

(c)

principal axis

(d)

radius curvature

Focal length is equal to half of the

(a)

centre of curvature

(b)

axis

(c)

radius of curvature

(d)

None of the above

If the image and object distance is same, then the object is placed at

(a)

infinity

(b)

at F

(c)

between f and P

(d)

at C