Question

What should be the position of the object when a concave mirror is used in torch as reflecting mirrot

Answer 1

1) A concave mirror produces a virtual and magnified image when the objects placed very close (between P and F, or between C and F) to it. This position should be used for shaving mirror. 2) When the object is placed at the focus, it generates a parallel beam of light. So for torches the object should be at F.