Physics, asked by 123cc, 7 months ago

anwer it pls. i will mark u brainlist

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Answers

Answered by priya9769

0

Answer:

60cm....

Explanation:

make as brainlist......

as u wish.........

Answered by jasvelupoorni

0

Answer:

Explanation:

r=g-f

so,

g=20cm

f=40cm

r=40cm - 20cm

r=20cm

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