Find the maximum kinetic energy of the photoelectrons ejected when light of wavelength 350 nm is incident on a cesium surface. Work function of cesium = 1.9 eV.
Hrishant Goswami , 10 Years ago
Grade 10
1 Answers
Deepak Patra
Last Activity: 10 Years ago
Sol. λ = 350 nn = 350 * 10^-9 m
∅ = 1.9 eV
Max KE of electrons =- =hC/λ - ∅ = 6.63 * 10^-34 *3 * 10^8/350 * 10^-9 * 1.6 * 10^-19
= 1.65 ev = 1.6 ev.
Provide a better Answer & Earn Cool Goodies
Enter text here...
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free