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//Chapter 4 : Laser and Holography
clear;
//Variable declaration
lamda=6730*10**-18 //wavelength
h=6.63*10**-34 //planck's constant
c=3*10**8 //speed of light
P=10**-3 //Power of laser
//Calculations
n=(P*lamda)/(h*c)/10**5
//Result
mprintf("Wavelength of radiation= %d*10**15 photons/sec",n)
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