Find the position of the final image after three successive reflections taking the first reflection on `m_(1)` .

Explanation

I reflection: Focus of mirror = – 10 cm
`rArr u=-15` cm
Applying mirror fomula :
`1/v+1/u=1/f`
`rArr v=-30` cm
For II reflection on plane mirror :
`u=-10` cm
`:. v=10` cm
For III reflection on curved mirror again :
`u=-50` cm
`f=-10` cm
Applying mirror formula :
`1/v+1/u=1/f" "rArr" "v=-12.5` cm