Question

find the position nature and size of the image of an object 3 cm high is placed at distance of 9 cm from a concave mirror of focal length 18 cm
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Answer 1

Answer:

Explanation:

1/f = 1/v+1/u

so, 1/18=1/v+1/9

by solving it we get 1/v= -1/18

v= -18 it is position

size: m= -v/u

m=2 ans.