Question

2
Focal length of a concave mirror is 10 cm. If image distance is equal to object distance, then
should be placed at a distance of ..... on the principal axis
A) 5 cm
B) 10 cm
C) 15 cm
D) 20 cm
​

Answer 1

Answer:

20 cm

Explanation:

image distance = object distance so ...

the radius= the distance of the object