Question

an object size is 10cm and it is placed 20cm distance infront of convex mirror the focal length is 10cm find image distance and size of image ​

Answer 1

Given:- ho=10cm

u= -20cm

f= 10cm

v=? hi=?

we know that

1/v= 1/f -1/u

= 1/10- 1/-20

=1/10+1/20

=2+1/20

3/20

v=20/3cm =6.66cm

Now

hi/ho=-v/u

hi/10=-20/3*-20

hi/10=1/3

hi=10/3cm =3.33cm

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