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clear;
clc;
printf("\nEx2.12\n");
//page no.-59
//given
V=2000;.................//potential diff. in volt
m=6.576*10^-24;........//mass of alpha particle in gm
h=6.62*10^-27;..........//planck's constant
e=4.8*10^-10;..........//charge
lambda=h*sqrt(150/(2*m*e*V)).............//wavelength in cm
printf("\nde-Broglie wavelength is 2.3*10^-11 cm\n");
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