Physics, asked by lakkarajuyatin, 1 year ago

A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is

Answers

Answered by sanjanabisht
44

hope this will help you!

Attachments:

lakkarajuyatin: why did you multiply v by10 mm
sanjanabisht: first i converted cm into mm thats why i multiplied it by 10
lakkarajuyatin: v is negative and m =-v/u
lakkarajuyatin: so -(-v) should be plus
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