The Radius of curvature of a convex mirror is 5 cm . find it's Focal length ❤️❤️✌️✌️ answer plzz
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R = 5 cm
f = R/2
= 5/2
= 2. 5 cm
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Answer:
2.5cm is the focal length of the convex mirror.
Explanation:
Given, radius of curvature of a convex mirror = 5cm.
- Radius of curvature of a convex mirror,convex or concave mirrors have a radius of curvature that is equal to two times their respective focal lengths.
- The radius of the sphere created by the convex or concave mirror is the radius of curvature.
Focal length;
- The distance between the optical centre and the main Focus is known as the focal length of a convex lens and is represented by the symbol f.
Relation between focal length and radius of curvature:
It has been found that the radius of curvature for spherical mirrors with small apertures is equivalent to double the focal length.
Therefore, R = 2f.
We have, R = 5cm
⇒f = = = 2.5cm
Hence, focal length of the convex mirror is 2.5cm.
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