Question

In the concave reflector of a torch, the bulb is placed
(a) between the pole and focus of reflector
(b) at the focus of reflector
(c) between focus and centre of curvature of reflector
(d) at the centre of curvature of reflector

Answer 1

b)At the focus of the reflector

Answer 2

Answer:

at the focus of reflective option B is correct