given a spherical mirror whose radius of curvature is + 20 cm what is the focal length of this mirror? does it form a real or virtual image?

Open in App

Solution

Dear student, As focal length is half of radius of curvature and thus ,f = +10cm. Since, sign is positive it means the mirror is convex and it will always form virtual erect and diminished image. Regards

Suggest Corrections

Similar questions

Q. The radius of curvature of a spherical mirror is

30 cm

. What is its focal length if it always forms a virtual image?

Q. What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror or convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.

Q. Assertion :Concave mirror always forms a virtual image. Reason: Focal length of a mirror is half of the radius of curvature.

The radius of curvature of a spherical mirror is 20 cm. What is its focal length?

At what distance from a concave mirror of focal length 10 cm should an object be placed so that : (a) its real image is formed 20 cm from the mirror ? (b) its virtual image is formed 20 cm from the mirror ?

Join BYJU'S Learning Program