A gamma-ray photon produces an electron and a positron, each with a kinetic ener

Question

A gamma-ray photon produces an electron and a positron, each with a kinetic energy of 231 keV . h=6.626×1034Js, c=2.998×108m/s,me=9.109×1031kg, e=1.602×1019C.

Part A

Determine the energy of the photon.

Express your answer using three significant figures.

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Part B

Determine the wavelength of the photon.

Express your answer to three significant figures and include the appropriate units.

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A gamma-ray photon produces an electron and a positron, each with a kinetic energy of 231 keV . h=6.626×1034Js, c=2.998×108m/s,me=9.109×1031kg, e=1.602×1019C.

Part A

Determine the energy of the photon.

Express your answer using three significant figures.

E=   MeV  

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Part B

Determine the wavelength of the photon.

Express your answer to three significant figures and include the appropriate units.

=

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Explanation / Answer

EPHOTON = 2 *231 = 462

LEMDA = hc/E = 6.626*10-34 * 2.998 * 108/462 *1000*1.6*10-19

LEMDA = 2.687 * 10-12 m

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