An electron beam has a kinetic energy equal to 100 {eV}. Find its wavelength associated with a beam, if mass of electron =9.1 \\times10^{-31} {kg} and 1 {eV}=1.6 \\times10^{-19} {J} \/ {eV}. (Planck's constant =6.6 \\times10^{-34} {Js} ) (1996)

Class 12 NEET Physics Dual Nature of Matter and Radiation

Question : 87 of 107

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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 1 eV=1.6×10−19J∕eV.
(Planck's constant =6.6×10−34 Js )

(1996)

24.6Å
0.12Å
1.2Å
6.3Å

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