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////Given
m=1.675*10**-27 //mass of neutron in kg
v=1.4*10**-10 //de broglie wavelength in m
h=6.63*10**-34 //Js
//Calculation
K=(h**2/(2*m*(v**2)))/(1.6*10**-19)
//Result
printf("\n Kinetic energy of neutron is %0.2f *10**-2 ev",K*10**2)
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