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# Optica geometrica

### clasa 9 B

TermDefinition
1.Ce se numește relexia luminii......... este fenomenul de schimbare a direcției de propagare a luminii la suprafața de separare a două medii
2.Care este lege a reflexiei luminii....... raza incidentă și raza reflectată se află în același plan
3.Unghiul de reflexie B este egal cu...... unghiul de incidență α
4.Lentila este.... un mediu transparent limitat de două suprafețe sferice
5.Lentilele convergente sunt..... un fascicul de rază paralele care traversează lentila și devine convergent
6.Sunt lentile mai groase la mijloc iar....... mai subțiri la margine
9. Care este mărime liniară transvensală....... B=1\d=H\h
7. Formula fundamentală 1\d+1\f=1\F
8.Formula distanței focale............ F=d*F\f+d
9.Dioptria{SI] .......... 1\m

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