Optics Question 118
Question: Two transparent slabs have the same thickness as shown. One is made of material A of refractive index 1.5. The other is made of two materials B and C with thickness in the ratio 1 : 2. The refractive index of C is 1.6. If a monochromatic parallel beam passing through the slabs has the same number of waves inside both, the refractive index of B is
Options:
A) 1.1
B) 1.2
C) 1.3
D) 1.4
Show Answer
Answer:
Correct Answer: C
Solution:
For A Total number of waves =
For B and C Total number of waves =
