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clc;
clear;
h=6.63*10^-34 //plancks constant in J-s
c=3*10^8 //velocity of light in m/s
lambda=180*10^-9 //wavelength in m
W=2*1.6*10^-19 //work function in Joule
m=9.1*10^-31 //mass in kg
e=1.6*10^-19 //charge in C
B=5*10^-5 //magnetic flux density in Tesla
//calculation
E=((h*c)/lambda)-W //kinetic energy in J
v=sqrt((2*E)/m) //velocity in m/s
r=(m*v)/(e*B)
mprintf("The radius of the circular path in magnetic field is = %1.3f m",r)
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