Homework Help: Physical Science

Posted by Reagan on Saturday, October 8, 2011 at 2:19pm.

A certain metal surface emits electrons when light is shone on it. (a)How can the number of electrons per second be increased? (b) How can the energies of the electrons be increased?

Physical Science - drwls, Saturday, October 8, 2011 at 2:39pm
(a) Use a brighter light (or focus the light onto the surface).

(b) Use light with a shorter wavelength. The higher per-photon energy will result in higher photoelectron energy.

Answer this Question

Related Questions

physics - A metal emits photoelectrons when yellow light is made to fall on it...
Chemistry - It takes 254 kJ/mol to eject electrons from a certain metal surface...
physics - A metallic surface emits photo electrons when green light falls on it...
Physics - A metallic surface emits electrons when it is irradiated with a yellow...
Physics - A metallic surface emits electrons when it is irradiated with a yellow...
Physics - A metallic surface emits electrons when it is irradiated with a yellow...
physics - A metallic surface emits photo electrons when green light falls on it...
Physics - a) If the work function for a certain metal is 1.8 eV, What is the ...
Physics - A metal surface is struck with light of wavelength 430 nm releasing a ...
AP Chemistry - To eject electrons from the surface of potassium metal, 222kJ/mol...

For Further Reading

First Name:
School Subject:
Answer: