Calculate the refractive index of the material for the glass prism in the diagram above
- A.√2/2
- B.4/3
-
C.
√2 - D.3/2
Correct Answer: Option C
Explanation
| n = | sin((A+D)/2) |
| sin(A/2) |
where A = the refracting angle of the prism(60o)
D = angle of deviation of the ray (30o)
| n = | sin((60+30)/2) |
| sin(60/2) |
| = | sin 45 |
| sin 30 |
= 1/√2/1/2√2/2/1/2
= √2/2 x 2/1 = √2
n = √2