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clear;
clc;
printf("\nEx2.10\n");
//page no.-58
//given
h=6.60*10^-34;...................//planck's constant
m=1.67*10^-27;..................//mass of neutron i kg
T=300;..........................//temperature in kelvin
k=1.376*10^-23;................//boltzmann constant in joule/degree
//As E=k*T, put in lambda=h/sqrt(2*m*E)
lambda=h/sqrt(2*m*k*T)..................//wavelength in angstrom
printf("\nwavelength is 1.777 angstrom\n");
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