Question

what do you mean by relation between radius of curvature and focal length of a mirror​

Answer 1

Answer:-

Relationship between Focal length and Radius of Curvature : The focal length (f) and the radius of curvature (r) of a spherical mirror of small aperture are related as

⟹ f = r/2

here ,

f is the focal length

and r is the radius of curvature

From the above formula it is clear that the centre of curvature is at a distance of r = 2f from the pole of the mirror .

Some Important Term:-

✧ Aperture: The circular area that determines the amount of light falling on a mirror or a lens is its a aperture .

✧ Centre of Curvature : The centre of the sphere of which the spherical mirror is a part is called the centre of curvature of the mirror.

✧ Radius of Curvature: The radius of sphere which the spherical mirror is a part is called the radius of curvature of mirror.

✧ Principal Axis : The line joining the pole and the centre of curvature is called principal axis of the mirror.

Answer 2

Relationship between Radius Of Curvature [r] and Focal Length [f] is that,

Focal Length is the half Of Radius in a mirror.

We Can Represent It By,

f = r/2.

Here,

f = Focal Length,

r = Radius Of Mirror.

Related Important Terms :-

• Aperture.

• Principal Axis.

• Radius Of Curvature.

• Foci Of Curvature.