What is effective mass of photon having wavelength lambda?
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An x-ray, like any photon, has zero mass; however it has kinetic energy, which is the energy that can do work. The energy is equal to Planck's constant (h) times the speed of light (c) divided by the x-ray's wavelength. Doing the math, 5.5E-16 is the energy in joules.
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Given that,
Wave length = λ
The kinetic energy of photon is
We need to calculate the effective mass of photon
Using formula of kinetic energy
Where, h = planck's constant
= wave length
c = speed of light
Hence, The effective mass of photon is
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