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//chapter-6,Example6_6,pg 494
Vp=0.1*10^3//deflection plate voltage
e=1.6*10^-19//charge of electron
l=1*10^-2//axial length of plates
del1=1*10^-3//output in mm
m=9.1*10^-31//mass of electron
D=0.22*10^-2//distance between centre of plates and screen
t=0.1*10^-6//time of flight
del=((Vp*e*l*D)/(del1*m))*(10^-10)//deflection of electron beam from null pos.
printf("deflection of electron beam from null pos.\n")
printf("del=%.2f cm",del)
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