Single Answer MCQ
Q-00019574
Light rays emerging from a glass slab are parallel to the incident rays because of:
1
Reflection at both surfaces
2
Equal angles of incidence and refraction
3
Refraction causing lateral shift
4
All the above
Answer and Solution
Answer
C. Refraction causing lateral shift
Solution:
The light rays remain parallel because the equal bending at entry and exit points cancels lateral shifts.
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