Monochromatic light is incident on a metal surface. The ejected electrons give rise to a current in the circuit in the link. The maximum energy of the ejected electrons is determined by applying a reverse potential, sufficient to reduce the current in the ammeter to zero.
http://i757.photobucket.com/albums/xx214/asebr001/physics%20problems/photo4.jpgIf the intensity of the light is increased. How will the required stopping potential change in system in link?It will not change. The intensity increase will increase the number of electrons moving but will NOT increase their maximum energy and it is that maximum energy that determines the required stopping potential.
Good question. I'll use it. Thanks.
