Question

Find kinetic energy of a proton whose de broglie wavelength if 1fm considering rest mass of proton

Answer 1

lambda or wavelength = h/ mv

p or momentum = mv= $\sqrt{2mKE$

thereforeλ = $\frac{h}{\sqrt{2mKE} }$

we have λ =$10^{-15$ = $\frac{h}{\sqrt{2mKE} }$

squaring, $10^{-30}$ = $\frac{h^{2} }{2mKE}$

h= 6.6 x $10^{-34}$

m= mass of proton = 1.6 x $10^{-27}$

solve the rest bro..

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