Light with energy above a certain point can be used to knock electrons loose, freeing them from a solid metal surface, according to Scientific American.
photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material
A. - (lambda) per unit length of the inner surface of the cylinder<span>b. (lambda)outer = 3 (lambda) </span><span>c. E= 3(lambda)/(4 pi epsilon(0) r^2)</span>
