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  • The voltage applied to an X-ray tube is 18 kV. The maximum mass of photon emitted by the X-ray tube will be <img alt="x \times 10^{-32} kg" src="https://entrancecorner.oncodecogs.com/gif.latex?x%20

The voltage applied to an X-ray tube is 18 kV. The maximum mass of photon emitted by the X-ray tube will be x \times 10^{-32} kg. Find out x?

Option: 1

2


Option: 2

6.4


Option: 3

3.2


Option: 4

9.1


Answers (1)

 

The energy of photon is given by mc2 now the maximum energy of a photon is equal to the maximum energy of electron = eV

                hence  mc2 = ev

\Rightarrow m = \frac{eV}{C^{2}} = \frac{1.6\times 10^{-19}\times 18\times 10^{3}}{(3\times 10^{8})^{2}} = 3.2 \times 10^{-32}kg

Posted by

Ramraj Saini

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