concave mirror is a part of sphere of radius 40 cm what is the focal length of the mirror
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hey mate!!!
ANSWER:
radius of sphere=radius of curvature of concave mirror
=40cm
f=40/2=20cm
hope the answer helps u
thakur572560:
thnx
thnx dhanya
welcome
Answered by
2
Answer:
focal length=r/2=40/2=20
focal length is 20cm
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