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A given light of wave length of 600 nm , wave length width is 0.2 nm . Find frequency width? Answer- 1.67× 10^11 Please explain this in brief.

A given light of wave length of 600 nm , wave length width is 0.2 nm . Find frequency width?
 
Answer- 1.67× 10^11
 
Please explain this in brief.

Grade:12th pass

2 Answers

Susmita
425 Points
4 years ago
\nu \lambda =c
\nu =\frac{c}{\lambda }
d\nu =\frac{-cd\lambda}{\lambda ^2}
         d\nu =\frac{-3*10^8*0.2*10^{-9}}{(600*10^{-9})^2}
            =1.67*10^{11}Hz
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Eshan
askIITians Faculty 2095 Points
4 years ago
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