Question

The radius of curvature of a concave mirror is
40 cm. Find position of an object in front of the
mirror, so that its real image is two times the
size of the object.

Answer 1

Answer:

concave mirror:

R=+40 am which meanst=20cm

m=p2/h1=1/2 (magnification of concave mirror is

positive)

now m= -v/u=1/2>>u-2v

mirror formula:

1/t=1/u+1/v

1/20=1/-2v+1/v

1/20 (-1+2)2v

v=10cn and u= -20cm

please make Brilliantly