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P. 4347. What is the energy of the \gamma photon which can create a positron when it collides with an electron at rest? The rest mass of the electron (and the positron) is 510 keV.

(6 points)

Deadline expired on 10 May 2011.


Google Translation (Sorry, the solution is published in Hungarian only.)

Megoldás. \(\displaystyle E=4m_0c^2=2,04\) MeV.


Statistics on problem P. 4347.
21 students sent a solution.
6 points:Barta Szilveszter Marcell, Béres Bertold, Bolgár Dániel, Fülep Andrea , Juhász Péter, Koncz Gabriella, Kovács 444 Áron, Nagy 111 Miklós, Szabó 928 Attila, Szigeti Bertalan György, Vuchetich Bálint.
5 points:Jéhn Zoltán.
4 points:2 students.
1 point:6 students.
Unfair, not evaluated:1 solution.


  • Problems in Physics of KöMaL, April 2011

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