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Calculate wave number...

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wave number

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Calculation of wave number `(bar(v))`
`lamda=5800Å=5800xx10^(-8)"cm"`
`=5800xx10^(-10)m`
`bar(v)=(1)/(lamda)=(1)/(5800xx10^(-10)m)=1.724xx10^(6)m^(-1)`
`=1.724xx10^(4)"cm"^(-1)`
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