Question

hi friends !!!!
please answer to this question.
full solution please

Answer 1

De Broglie wavelength=h/mv

h=6.63*$10^{-34}$

m=9.1*$10^{-31}$

v=0.3*3*$10^{8}$

substituting we get

λ=8.09*$10^{-12}$