Physics
Grade-10
Easy
Question
The radius of curvature of a convex lens whose focal length is 25 cm is ____ cm.
Hint:
For a convex lens, the focal length is half of the radius of curvature and the radius is twice the focal length. i.e. f= R/2 or R= 2f
The correct answer is: 50
The radius of curvature of a convex lens whose focal length is 25 cm is 50 cm.
- The distance between the principal force and the optical center is called the focal length.
- The focal length will be half of the radius of curvature and the radius is twice the focal length.
- Applying R= 2f, when the focal length is 25 cm, the radius is 2
25= 50 cm.
25= 50 cm. Related Questions to study
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