Optics 2 Question 9
9. A ray of light is incident at the glass-water interface at an angle , it emerges finally parallel to the surface of water, then the value of would be
(a)
(b)
(c)
(d) 1
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Answer:
Correct Answer: 9. (b)
Solution:
- Applying Snell’s law
constant
at 1 and 2 , we have
Here,