A point source of light is placed at a distance of 2 f from a converging lens of focal length f. The intensity on the other side of the lens is maximum at a distance

Question

KollegeApply · Accepted Answer

2 f Since the object is placed at 2 f, the image of the object will be formed at distance of 2 ffrom a converging lens. It can also be shown from the lens formula: 1/v - 1/u = 1/f Here, u = − 2 f and f = f On putting the respective values we get: 1/v - 1/- 2f = 1/f \Rightarrow 1/v = 1/f - 1/2f = 1/2f Therefore, image distance v = 2 f

AChoose Your Answer