Mathematical and Physical Journal
for High Schools
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Problem P. 3792. (April 2005)

P. 3792. A collecting lens makes a 6 cm high real image of a 12 cm high object on a screen at a 45 cm distance from the object. Determine the position of the lens and its focal length with plotting and calculation.

(4 pont)

Deadline expired on May 11, 2005.


146 students sent a solution.
4 points:61 students.
3 points:74 students.
2 points:4 students.
1 point:6 students.
0 point:1 student.

Problems in Physics of KöMaL, April 2005