Question

A concave mirror of radius of curvature 20cm
produced an inverted image 3 times the size of
an object placed of the mirror and perpendicular to the axis. Calculate the position of the object and image.

Answer 1

u =

f= 10 cm

v= 30 u

1/f= 1/v+1/u

1/10=1/30u+1/u