JIPMER 2017
- Exam
- JIPMER
- Year
- 2017
- Subject
- Physics
- Chapter
- Ray Optics
JIPMER 2017 · Physics · Ray Optics
A beam of light composed of red and green rays is incident...
A beam of light composed of red and green rays is incident obliquely at a point on the face of a rectangular glass slab. When coming out on the opposite parallel face, the red and green rays emerge from
Options
- Atwo points propagating in two different non-parallel directions.
- Btwo points propagating in two different parallel directions.
- Cone point propagating in two different directions.
- Done point propagating in the same direction.
Correct answer
B. two points propagating in two different parallel directions.
Step-by-step solution
We know that in any medium except vacuum or air, the velocities of different colours are different. Therefore, both red and green colours are refracted at different angles of refraction. So, after emerging from glass slab through opposite parallel faces, they appear at two different points and move in two different parallel direction.