Question

The radius of curvature of concave mirror is 50cm. Where should an object be placed from the mirror so as to form its image at infinity. Justify ur ans.

Answer 1

The object should be placed at a distance of 25cm from the mirror.
R/2=f
f=25
we know that if we place object at focus then we"ll obtain picture at infinity therefore object should be placed at focus that is 25cm from the mirror.

Answer 2

The object should be placed at a distance of 25cm from the mirror.

R/2=f

f=25

we know that if we place object at focus then we"ll obtain picture at infinity therefore object should be placed at focus that is 25cm from the mirror.