Physics, asked by Damini1111, 1 year ago

A concave mirror is made by cutting a hollow thin glass sphere of radius 30cm. Find it's focal length ........
Guys Pls help......

Answers

Answered by diviii

44

Focal length =1/2 of radius
Focal length =30/2=15

Answered by Saifßàã

34

hey
f=r/2
f=30/2
f=15cm is your answer

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