Saved Bookmarks
| 1. |
Polychromatic lightdescribed at a place by the equation E=100[sin(0.5pixx10^(15)t)+cos(pixx10^(15)t)+sin(2pixx10^(15)t)] where E is in V/m and t in sec, falls on a metal surface having work function 2.0 eV. The maximum kinetic energy of the photoelectron is [Take h = Planck's constant = 6.4xx10^(-34)J-s] |
|
Answer» zero `hv-phi=K_(max)` `(6.4xx10^(-34)xx10^(15))/(1.6xx10^(-19))-2EV=K_(max)` `K_(max)=2eV` |
|