Mathematical and Physical Journal
for High Schools
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Problem P. 3943. (January 2007)

P. 3943. John showed his friends that with his glasses he can collect the Sun's rays and light a piece of paper. When the Sun is shining why don't his glasses burn the skin near his eyes?

(3 pont)

Deadline expired on February 12, 2007.


Statistics:

116 students sent a solution.
3 points:90 students.
2 points:12 students.
1 point:9 students.
0 point:4 students.
Unfair, not evaluated:1 solution.

Problems in Physics of KöMaL, January 2007