KöMaL - Középiskolai Matematikai és Fizikai Lapok
Sign In
Sign Up
 Magyar
Information
Contest
Journal
Articles

 

Problem P. 4221. (January 2010)

P. 4221. The base of a glass prism is an isosceles triangle. The angle between the equal sides is 40o and the refractive index of the glass of the prism is 1.5. What should the angle of incidence of the light beam incident on one of the congruent faces of the prism be in order that the refracted ray is to be parallel to the base of the isosceles triangle. What is the answer if the prism is placed into water of refractive index of 1.33, or into bensole of refractive index 1.6?

(4 pont)

Deadline expired on 10 February 2010.


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

Megoldás. A beesési szög a három esetben rendre \(\displaystyle 30{,}9^{\circ}\); \(\displaystyle 22{,}7^{\circ}\) és \(\displaystyle 18{,}7^{\circ}\).


Statistics:

95 students sent a solution.
4 points:70 students.
3 points:4 students.
2 points:10 students.
1 point:9 students.
0 point:1 student.
Unfair, not evaluated:1 solution.

Our web pages are supported by:   Ericsson   Cognex   Emberi Erőforrás Támogatáskezelő   Emberi Erőforrások Minisztériuma   Nemzeti Tehetség Program    
MTA Energiatudományi Kutatóközpont   MTA Wigner Fizikai Kutatóközpont     Nemzeti
Kulturális Alap   ELTE   Morgan Stanley