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clc;
c=3*10^8; //velocity in m/sec
l=2*10^-11; //wavelength in m
f=c/l; //calculating frequency
e=1.6*10^-19; //in Coloumb
disp(f,"Frequency in Hz = "); //displaying reuslt
h=6.63*10^-34; //planck's constant in J.sec
V=(h*f)/e; //calculating energy
disp(V,"operating Voltage in Volt = "); //displaying reuslt
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