Structure of Atom — Chemistry STD 11 Science — Question
Gujarat BoardEnglish MediumSTD 11 ScienceChemistryStructure of Atom2 Marks
Question
Calculate the mass of a photon with wavelength $3.6\mathring{\text{A}}.$
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Answer
$\lambda=3.6\mathring{\text{A}}=3.6\times10^{-10}\text{m}$
Velocity of Photon = Velocity of light de Broglie equation,
$\text{m}=\frac{\text{h}}{\lambda\text{c}}=\frac{6.626\times10^{-34}\text{Js}}{\big(3.6\times10^{10}\text{m}\big)\big(3.0\times10^8\text{ms}^{-1}\big)}$
$=6.135\times10^{-33}\text{kg}$
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