Mathematical and Physical Journal
for High Schools
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Problem P. 4625. (March 2014)

P. 4625. The image of the Sun is projected to a white screen by means of a converging lens. What kind of data are necessary, in order to state by what factor the image of the Sun brighter than the part of the screen which is illuminated by the Sun?

(4 pont)

Deadline expired on April 10, 2014.


Sorry, the solution is available only in Hungarian. Google translation

Megoldásvázlat. A fényességek arányát a Nap látószöge és a lencse ,,fényereje'' (a lencse fókusztávolságának és az átmérőjének aránya) határozza meg.


Statistics:

19 students sent a solution.
4 points:Marosvári Kristóf, Seress Dániel, Trócsányi Péter.
3 points:Berta Dénes, Németh Flóra Boróka, Várda Ernák.
2 points:8 students.
1 point:4 students.
0 point:1 student.

Problems in Physics of KöMaL, March 2014