If a concave mirror is obtained from a sphere of diameter 12cm, what will be its focal length?
Answers
Answered by
0
Explanation:
D= centre of curvature
f=r/2
=12/2
.
. . focal length =6 cm
Answered by
0
Answer:
3cm
Explanation:
since: radius=diameter/2
r=12/2
r=6cm
then, f=r/2
f=6/2
f=3cm
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