MCQ
Photoelectric effect was successfully explained first by
- APlanck
- BHallwash
- CHertz
- ✓Einstein
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$(A)$ The ray gets totally internally reflected at face $CD$
$(B)$ The ray comes out through face $\mathrm{AD}$
$(C)$ The angle between the incident ray and the emergent ray is $90^{\circ}$
$(D)$ The angle between the incident ray and the emergent ray is $120^{\circ}$
