Question

a six cm object is placed perpendicular to the principal axis of a concave mirror .f is 45 find distance of image and draw ray diagram​

Answer 1

u=-20cm ; f=-30cm ; v=?

1/v-1/u=1/f

1/v-1/-20=1/-30

1/v+1/20=1/-30

1/v=1/-30-1/20

1/v=20+30/-600

1/v=1/-12

v=-12cm