the focal length of convex mirror is 20 cm calculate its radius of curvature
Answers
Answered by
2
Answer:
Explanation:
Answer. => R = 40 cm. [R is radius of curvature. f is focal length.]
f = R/2
=> 20 = R/2
=> R/2 = 20
=> R = 40 cm.
[R is radius of curvature.
f is focal length.]
OR :-
R = 2 f
= 2×20
= 40 cm.
Answered by
4
Explanation:
Let us consider R is a radius
And f is a focal length
As we know R=2f
Given f=20cm
Now R =2×20=40
Hence the answer is 40cm
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