A spherical strip of glass is cut from a hollow sphere of diameter 40cm.The strip is polished so as to make a concave mirror. What is the radius of the concave mirror??? plss anyone explain!!!This is the third time I am posting this question!!!Its urgent!!!!!pls
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Answered by
6
20 cm will be radius ..diameter by 2 ..Simple
vivee2:
but the diameter of hollow sphere is only 40cm but not the cut sphere
hello
pls explain
Answer will be 20 only ...focal length is the radius of the sphere of which the lens or mirror is a part ..that s the defination
how can we take the diameter of the cut sphere as 40cm
Mark as brainliest plss
Answered by
4
focal length =R/2
R=40cm/2 =20cm
f=r/2
f=20/2
f=10
R=40cm/2 =20cm
f=r/2
f=20/2
f=10
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