1. Jan 17, 2010

Shaley

For real images in converging lenses, I know that if the object distance increases, then the image distance will decrease. However, I need to explain WHY and I don't know? Pleaes help

2. Jan 18, 2010

rl.bhat

For a given converging lens focal length is constant. The formula for lens is
1/f = 1/u + 1/v,
As u increases, v decreases to keep 1/f constant.