Q:1 Plot Plank’s law for black body distribution with wavelength at temperature range 300 K -800 K in 50K steps. Use the wavelength of the monochromatic light in the range 10-7 cm to 2*10-5 cm.
AIM OF THE EXPERIMENT:
To plot Planck's law for blackbody radiation.
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A PC/laptop.
Scilab 6.0.0 must be installed.
CODING:
clc;
c=2.997*10.^8;
h=6.625*10.^-34;
k=1.38*10.^-23;
n=1;
step= 2.8429e-007;
lambda=[10.^-7:step:2*10.^-5];
T=1;
for i=300:50:800
Mi=(2*%pi.*h.*(c.^2))./((n.^2).*(lambda.^5).*(exp((h.*c)./(n.*k.*T.*lambda*i))-1));
plot(lambda,Mi)
end
xlabel('lambda')
ylabel('M(lambda)')
title('Monochromatic emittance')
legend('T=300','T=350','T=400','T=450','T=500','T=550','T=600','T=650','T=700','T=750','T=800')
OUTPUT:
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For online classes & notes, Contact: quantaphysics3@gmail.com
Join Telegram: quantaphysics.com
Subscribe Youtube: BS quantaphysics
NOTES:
For online classes & notes, Contact: quantaphysics3@gmail.com
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