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An Electron with Kinetic Energy 589 KeV Collides with a Positron

Question 10

Multiple Choice

An electron with kinetic energy 589 keV collides with a positron of the same kinetic energy moving in the opposite direction. Calculate the wavelength of the two identical photons produced in the annihilation.


A) 4.22 × 10-3 nm
B) 1.13 × 10-3 nm
C) 2.11 × 10-3 nm
D) 2.26 × 10-3 nm
E) 2.26 × 10-3 m

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