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clear
//Given
h=6.62*10**-34
m=9*10**-31
v=10**5
mp=1.67*10**-27

//Calculation
l=h/(m*v)
lp=h/(mp*v)

//Result
printf("\n De-Broglie wavelength of electrons is %0.1f *10**-10 m",l*10**10)
printf("\n De-Broglie wavelength of protons is %0.4f *10**-10  m",lp*10**10)