The radius of curvature of a spherical mirror is 20cm. what is its focal length
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Answered by
2
Answer:
if radius of curvature is 20cm
focal length=1/2 ×r of curvature
=>20/2
=>10cm
Answered by
2
Answer:
r equals to 2f
that means f eyals to r/2
so f equals to 20/2
I,e 10 cm
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