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Arisa [49]
2 years ago
5

34. What is the frequency of a light whose wavelength is 660 nm? ​

Chemistry
1 answer:
Oksanka [162]2 years ago
8 0
454 teraHz I think, tell me if this is wrong
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The correct option is:

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Explanation:

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Energy=\frac{hc}{\lambda}\\\\h=Planck's\:constant=6.626\times10^{-34}J/s\\c=speed\:of\:light=3\times10^{8}m/s\\\lambda=wavelength\:of\:radiation\\\\\lambda=\frac{hc}{Energy}=\frac{6.626\times10^{-34}\times3\times10^{8}}{3.371\times10^{-19}}=5.897\times10^{-7}m=589.7nm\\

Hence, the wavelength (in nm) of radiation is 589.7nm (approximately equal to 589.3nm)

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