Question

A spherical mirror produces an image of -1 magnification on a screen placed at a distance of 50 cm from the mirror find the focal length??​

Answer 1

Explanation:

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Answer 2

Answer:

the Focal length is 25 cm.

Explanation:

As magnification is -1 so from frormula m=-v/u

-1=-v/-50

v=-50 cm

for focak length=1/v+1/u=1/f

=1/-50 +1/-50=1/f

1/f=-2/50

1)f=-1/25

f=-25cm...