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Find the wave number of and energy of ea...

Find the wave number of and energy of each photon present in yellow light having wavelength 580 nm.
`[c=3xx10^(8)m*s^(-1) and h=6.626xx10^(-34)J*s]`

Text Solution

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Wave number `(overline(v))=(1)/(lamda)=(1)/(580xx10^(-9))m^(-1)`
`=1.724xx10^(6)m^(-1)[1nm=10^(-9)m]`
Energy of each photon `(E)=hv=hxx(c)/(lamda)`
`=(6.627xx10^(-34))xx(3xx10^(8))/(580xx10^(-9))=3.428xx10^(-19)J`.
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