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Grade 126 grade science

Two laser beams one of wave length 640 nm and the other 400 nm have same unit flux of photons. Their powers are in the ratio

Profile image of Arun
9 Years agoGrade 12
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1 Answer

Profile image of Mayajyothi C J
9 Years ago
P \alpha \frac{1}{\lambda ^{2}}
 
\frac{P_{1}}{P_{2}} =\frac{(\lambda _{2})^{2}}{(\lambda_{1})^{2}}
=\frac{400^{2}}{650^{2}}
=\frac{64}{169}
 

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