Question

compute de broglie wavelength of an electron whose kinetic energy is 10eV​

Answer 1

λ=h/p

where

p =mv

let KE=(1/2)mv^2

v=√(2E/m)

λ=h/√(2mE)

where h=6.626×10^-34

m=9.1×10^-31

E=10ev

=96×10^4J

λ=(6.626×10^-34)/√(2×9.1×10^-31×96×10^4)

Answer 2

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