Physics, asked by dhruvagarwal108, 1 year ago

A concave mirror is part of a shpere of radius 40 cm.what is a focal lenght?

Answers

Answered by AionAbhishek

3

f= r/2
f= 40/2
f= 20 cm

Answered by Prakhar2908

0

focal length is half of radius
so focal length= 40/2
=20cm

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