Question

What is the effect of doubling the intensity of light on the number of electrons being emitted from a metal?
a.
The more intense light is more likely to cause more electrons to be emitted than the weaker light.
c.
The less intense light must shine for a longer time to cause electrons to be emitted.
b.
The more intense light will cause electrons to be emitted with faster velocities than the weaker light.
d.
Light intensity has no effect on whether electrons are emitted or not.

Answer 1

http://en.wikipedia.org/wiki/Photoelectric_effect