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  • If an object is placed 10 cm in front of a convex mirror of focal length 20 cm then the distance of the image from the mirror is:

If an object is placed 10 cm in front of a convex mirror of focal length 20 cm then the distance of the image from the mirror is:

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best_answer

Given;

Focal length, $f=20 \mathrm{cm}$
Object distance, $u=-10 \mathrm{cm}$

Using mirror formula.
\frac{1}{v}+\frac{1}{u}=\frac{1}{f}

we get

v=\frac{20}{3} \mathrm{cm} 

Posted by

avinash.dongre

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