What is the relation between focal length and radius of curvature of a mirror?
The relation between focal length (f) and radius of curvature (R) of a spherical mirror is that the focal length is equal to half of the radius of curvature i.e. f=R2.
What is the relation between focus and radius of curvature?
The relationship between the focal length f and radius of curvature r is r = 2f.
What will be the focal length if the radius of curvature is 20 cm?
The radius of curvature of a spherical mirror is 20 cm. What is its focal length? Therefore, the focal length of the spherical mirror is 10 cm.
What is the focal length of a spherical mirror if the radius of curvature is 30 cm?
Focal length of convex mirror is positive, hence here focal length will be +15 cm.
What is the focal length of a curved mirror if it has a radius of curvature is 40 cm?
Since the focal length is half the length of the radius of curvature. The focal length comes out to be 20 cm.
How do you find the focal length of a radius of curvature?
Focal Length of a Curved Mirror A mirror with a curvature radius R of the surface has a focal length f = R / 2, if the beam axis is normal to the mirror surface.
What is the radius of curvature of a plane mirror of size 5 * 5 cm?
The plane mirror is a part of sphere with infinite radius . It’s every part is a part of sphere. Hence, its radius of curvature is infinite.
Why is the radius of curvature infinity?
The radius of curvature of a plane mirror is infinity. A plane mirror is a part of a sphere of infinite radius because in the limit the “curved” surface of the sphere becomes straight. So the radius of curvature is infinity.
Is Focal Length of plane mirror is zero?
The focal length is positive if it is on the left side of the mirror, it is positive if it is on the right side of the mirror, it is zero if reflected rays meet at the pole and it is Infinity if reflected rays never meet. So, the focal length of the plane mirror is Infinity.
What is the focal length of plane mirror * 1 point?
Focal length of a plane mirror is infinity. (A plane mirror can be considered as a spherical mirror of infinite radius of curvature. Focal length is half of radius of curvature and hence it is infinity.