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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