The focal length of a convex mirror is 20 cm what is its radius of curvature?
Answers
Answered by
85
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.
=> 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
32
R=2f
focal length of convex mirror =20cm(given)
R=2×20=40cm
focal length of convex mirror =20cm(given)
R=2×20=40cm
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