Question

Define the focus and focal lengthfor a
1.converging mirror
2.diverging mirror

Answer 1

Answer:

1.Converging mirror:

When rays parallel to principal axis after reflection converge at a point,it is called focus.The distance between pole and focus is focal length.

2.Diverging mirror:

When rays parallel to principal axis after reflection, light rays appear to diverge at a point,it is called focus.The distance between pole and focus is focal length.