Physics, asked by pshabana692, 10 months ago

What is effective mass of photon having wavelength lambda?

Answers

Answered by ruhi455
0

Answer:

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.

Answered by CarliReifsteck
3

Given that,

Wave length = λ

The kinetic energy of photon is

K.E=\dfrac{hc}{\lambda}

We need to calculate the effective mass of photon

Using formula of kinetic energy

K.E=\dfrac{hc}{\lambda}

\dfrac{1}{2}mc^2=\dfrac{hc}{\lambda}

m=\dfrac{2h}{\lambda c}

Where, h = planck's constant

\lambda = wave length

c = speed of light

Hence, The effective mass of photon is \dfrac{2h}{\lambda c}

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