Question

A 5cm tall object is placed at a distance of a 20cm from a concave mirror of focal length 30cm, use mirror formula to determine the position and size of the image formed

Answer 1

Nature=virtual and erect

size=other side of mirror

size=highly enlarge

1/f=1/v + 1/u

1/30=1/v_1/20

1/30+1/20=1/4

v=12......