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////Given
m=1.672*10**-27 //mass of neutron in kg
h=6.60*10**-34 //Js
v=1.0*10**-10 //de broglie wavelength in m
//Calculation
K=(h**2/(2.0*m*v**2))/(1.6*10**-19)
//Result
printf("\n Kinetic energy of a neutron is %0.2f *10**-2 ev",K*10**2)
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