The particle with mass equal to 9.1 * 10-31
Kg and charge equal to -1.6 * 10-19 couloumbs is
A) beta
B) alpha
C) gamma
D) X
An electron beam has a kinetic energy equal to 100 eV. Find its wavelength associated with a beam, if mass of electron =9.1×10−31 kg and 1eV=1.6×10−19 V. (Planck’s constant =6.6×10−34 Js)