Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
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Problem P. 3821. (September 2005)

P. 3821. Find the least size of that mirror in which a 1.7-m tall person can see himself from top to toe, if his head is 2 m away from the plane of the mirror, which makes a 30o angle with the vertical.

(5 pont)

Deadline expired on October 11, 2005.


Statistics:

155 students sent a solution.
5 points:Bogár 560 Péter, Csányi Róbert, Dudás János, Fülep Csilla, Hasznos László, Horváth 795 Andrea, Károlyi Márton, Kónya 495 Gábor, Lakomcsik Attila, Mirk Katinka, Molnár 811 Kristóf, Nagy 630 Viktor, Nyíri Dávid Ákos, Peregi Tamás, Pósa László, Ratku Antal, Remete Attila Márió, Szabó András László, Széchenyi Gábor, Szirmai Péter, Szűcs Gergely, Takács 484 Marcell, Takátsy Balázs, Török Balázs, Werner Miklós.
4 points:29 students.
3 points:45 students.
2 points:27 students.
1 point:14 students.
0 point:13 students.
Unfair, not evaluated:2 solutions.

Problems in Physics of KöMaL, September 2005