Mathematical and Physical Journal
for High Schools
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Problem P. 4132. (January 2009)

P. 4132. What is the amplitude of the electric field of the light emitted by a He-Ne laser whose power is 10 mW? The cross section of the beam is 1 cm2.

(5 pont)

Deadline expired on February 11, 2009.


Statistics:

42 students sent a solution.
5 points:Bali-Papp Donát, Budai Ádám, Csopor Dávid, Deák Zsolt, Egyed Zsombor, Filep Gábor, Filep Tibor, Garaguly Gergő, Hartstein Máté, Iván Dávid, Jéhn Zoltán, Kovács 235 Gábor, Kovács Benjámin, Krämer Zsolt, Lovas Lia Izabella, Pálovics Péter, Patartics Bálint, Pázmán Koppány, Tamási Mátyás, Török 999 Csaba, Trényi Róbert, Wilk Gábor, Zelei Kristóf.
4 points:Balassa Péter, Barancsuk Lilla, Boros Csanád Örs, Englert Dávid, Ercsey Tamás, Földes Imre, Hoksza Zsolt, Kardos Örs, Kovács Attila, Kovács Márk, Laczkó Zoltán Balázs, Varju 105 Tamás, Vörös Beáta.
2 points:4 students.
0 point:1 student.
Unfair, not evaluated:1 solution.

Problems in Physics of KöMaL, January 2009