Mathematical and Physical Journal
for High Schools
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# Problem P. 3952. (January 2007)

P. 3952. The back wall of an aquarium has a reflective surface and it is 30 cm from the front wall. The width of the walls is negligible. A fish swims in the water exactly halfway between the two walls. The fish is observed from a direction which is perpendicular to the walls. a) How far from the front wall do you see the fish? b) How far do you see the image of the fish? The refractive index of water is 1.33.

(4 pont)

Deadline expired on February 12, 2007.

### Statistics:

 48 students sent a solution. 4 points: Almasi Susann Melinda, Blázsik Zoltán, Bodosi Eszter, Csányi Gergely, Farkas Ádám László, Filep Tibor, Fonyó Dávid, Hegyi Ádám, Iván Dávid, Kalló Bernát, Lénárt Tamás, Lovas Lia Izabella, Máté István Mátyás, Nagy Loránd, Nyíri Dávid Ákos, Pálovics Róbert, Para Attila, Pásztor Bálint, Péter Zoltán, Rárósi Dávid, Reiter Viktor, Roósz Gergő, Szerző 147 Péter, Szőcs 923 István, Takács 484 Marcell, Tolner Ferenc, Tóth 123 László, Tóth 796 Balázs, Túri Attila, Tüzes Dániel, Varga Bonbien. 2 points: 6 students. 1 point: 2 students. 0 point: 5 students. Unfair, not evaluated: 4 solutionss.

Problems in Physics of KöMaL, January 2007