Question

f=30cm,u=80cm,o=5cm find v​ in concave mirror.

Answer 1

Answer:

Explanation:

by mirror formula 1/f=1/v+1/u

=1/-30=1/v+1/-80

1/-30+1/80=1/v

-50/(240)=1/v

-240/50=v

-4.80=v

  now put the formula of m=-v/u   or  hi/ho

   -(-4.80)/80=hi/5

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