Question

at what distance from a concave mirror of focal length 10CM should an object 2 cm long be place in order to get and erect image 6 cm tall?​

Answer 1

Answer:

u=-13.33cm

Explanation:

f=-10cm

o=2cm

i=6cm

m=I/o=3cm

v=?,u=?

v/u=3cm

v=3u

1/f= 1/v+1/u

so u= -13.33cm