Physics, asked by adharshm2925, 10 months ago

The outer surface of a hollow sphere of aluminium of radius 40 cm is to be used as a mirror. What will be the focal length of this mirror?

Answers

Answered by dhruvbadaya1

0

Answer: The focal length of the mirror will be half of the radius.

Therefore, it will be 40/2 = 20 cm

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