Question

a convex mirror of focal length 15 cm produces an image 1by 4 time magnified.find the object distance​

Answer 1

Answer:

https://doubtnut.app.link/IbZySDsGAgb

Answer 2

Answer:

from mirror formula

Explanation:

1/f=1/v+1/u

given by : focal length=15cm

and v(image) = 1/4

then to find u

from formula

1/15=1/4+1/u

so 1/u=> 1/15-1/4= -11 /60

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