Mathematical and Physical Journal
for High Schools
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Problem M. 273. (November 2006)

M. 273. The display of a solar cell powered calculator turns off if some part of the solar cell is covered. (Use a calculator which does not have a back-up battery.) Find the limit case, and examine the relationship between the area of the uncovered surface and the intensity of light. Shading the uncovered part of the solar cell with semi-permeable foils investigate how the absorption of light depends on the number of layers.

(6 pont)

Deadline expired on December 11, 2006.


22 students sent a solution.
6 points:Kőrösi Márton, Meszéna Balázs, Pásztor Árpád, Tüzes Dániel, Vida György.
5 points:Hasznos László, Pósa László, Roósz Gergő, Szél Péter.
4 points:7 students.
3 points:1 student.
2 points:4 students.
Unfair, not evaluated:1 solution.

Problems in Physics of KöMaL, November 2006