Question

An object of height 10cm is placed at a distance of 10cm from a convex mirror of focal length 15cm. find the nature, position and size of the image​

Answer 1

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Answer 2

Answer:

Given

ho =10cm

u=-10cm

f=25cm

v=?

hi=?

nature?

w.k.t

1/f =1/v+1/u

1/15=1/v +-1/10

1/15=1/v-1/10

1/15+1/10=1/v

2+3/30=1/v

5/30=1/v

1/6=1/v

v=6cm

w.k.t

m=-v/u =hi/ho

-6/-15 =hi/10

hi=-60/-15

hi=4cm

as we got v in positive then it is erect and virtual

Thnks this may help u