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Calculate the wavelength of a photon in ...

Calculate the wavelength of a photon in Angstrons having an energy of 1 electron-volt.

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The correct Answer is:
`1eV=1.602xx10^(-19)` joule
`h=6.62xx10^(-34)J-s,c=3xx10^(8)ms^(-1)`
`lamda=(h*c)/(E)=12.42xx10^(-7)m=12.42xx10^(3)`Ã…
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