Optics 4 Question 14
14. A glass prism of refractive index 1.5 is immersed in water (refractive index 4/3). A light beam incident normally on the face
(1981, 3M)
(a)
(b)
(c)
(d) None of these
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Answer:
Correct Answer: 14. (a)
Solution:
- Let
Angle of incidence at face
Total internal reflection (TIR) will take place on this surface if,
