Posted by Mary on Friday, December 14, 2007 at 1:49am.
In the photoelectric effect, suppose that the intensity of the light is increased, while the frequency is kept constant. The frequency is greater than the minimum frequency f0. State whether each of the following will increase, decrease, or remain constant, and explain your choice.
(a) the current in the phototube
(b) the number of electrons emitted per second from the metal surface
(c) the maximum kinetic energy that an electron could have
(d) the maximum momentum that an electron could have
(e) the minimum de Broglie wavelength that an electron could have
I have figured out the answer to b and c but I am unsure of the reason. Please explain this problem for me please so that I solve this problem. I am sure it is real simple. I have been doing physics for hours and nothing is making sense anymore. Please help!!!
- Physic please help! - drwls, Friday, December 14, 2007 at 6:56am
a)increase b) correct c) correct
d)KE max value is constant, and so is mass, so momemtum is also
e) minimum de Broglie wavelength goes with maximum momentum, which stays constant
Answer this Question
Physics - If centripetal force on an object in uniform circular motion is ...
physic - Light is shone on a metal and photoelectrons are emitted. Can you tell ...
Chemistry - E=hv E=energy h= Planck's constant =6.626 x 10^-34 v= frequency 1. ...
college: Chemistry - I need help on this homework problem and I do not ...
Physics - Resonance in a system, such as a string fixed at both ends, occurs ...
science - How do I use the fact that each element has a different set of energy ...
chem - an energy value of 3.313x10^-19 joules is needed to break a chemical bond...
Physics - Suppose that a police car on the highway is moving to the right at 20 ...
Physics - In the photoelectric effect, what happens to the stopping voltage when...
physical - Light is shone on a metal and photoelectrons are emitted. Can you ...