Terms Related to Spherical Mirrors

Q. Define the radius of curvature of a spherical mirror.
If the radius of curvature of a spherical mirror is 20 cm, what is its focal length? [2 Mark]

Q. Define the radius of curvature of a spherical mirror.
If the radius of curvature of a spherical mirror is 20 cm, what is its focal length?

Q. Which of the following (referred to a spherical mirror) do (does) not depend on whether the rays are paraxial or not?
(a) Pole
(b) Focus
(c) Radius of curvature
(d) Principal axis

Q.

Which of the following relations hold good for 'R' and 'F', where 'R' is the radius of curvature of a spherical mirror and 'F' is the focal length of the mirror?

1. R = F

2. $R=\frac{F}{2}$

3. $F=\frac{R}{2}$

4. 2F = R

Q. Define the radius of curvature of a spherical mirror.
If the radius of curvature of a spherical mirror is 20 cm, what is its focal length?

Q. What should be measurement taken between centre of curvature and focus and pole in spherical mirrors ?

Q.

Define focus?

Q. If the radius of curvature of a concave mirror is 20 cm, then its focal length is:

1. 10

Q.

A ray of light passing through the centre of curvature of a spherical mirror, after reflection passes through

1. Twice the focus

2. Centre of curvature

3. Pole of the mirror

4. Principal focus

Q. How are focal length and radius of curvature connected?

Q.

Rays parallel to the principal axis of a concave or convex mirror meet or appear to come from which point?

1. Centre of curvature

2. Pole

3. Focus

4. A point in the middle of the centre of curvature and focus

Q.

Rays parallel to the principal axis of a concave or convex mirror meet or appear to come from which point?

1. Centre of curvature

2. Pole

3. Focus

4. A point in the middle of the centre of curvature and focus

Q. The focal length of a mirror is the

1. Distance of the focus from the centre
2. Half the radius of curvature.
3. Distance of the focus from the pole
4. Distance of the centre from the pole