How to calculate focal length from radius of curvature?
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Answered by
5
focal length is half of radius of curvature
f = R/2
The sign depends on the type of lens or mirror.
For convex lens, f is positive
for concave lens, f is negative
For convex mirror, f is negative
for concave mirror, f is positive
f = R/2
The sign depends on the type of lens or mirror.
For convex lens, f is positive
for concave lens, f is negative
For convex mirror, f is negative
for concave mirror, f is positive
Answered by
4
Hey!
_________________
Focal length = Radius of curvature / 2
f = R/2
This formula is valid for both types of mirrors, concave as well as convex.
For convex mirrors , focal length will be negative.
While, for concave mirrors, focal length will be positive.
__________________
Hope it helps...!!!
_________________
Focal length = Radius of curvature / 2
f = R/2
This formula is valid for both types of mirrors, concave as well as convex.
For convex mirrors , focal length will be negative.
While, for concave mirrors, focal length will be positive.
__________________
Hope it helps...!!!
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