Question
In an experiment for determination of refractive index of glass of a prism by i− δ, plot, it was found that a ray incident at angle 35o, suffers a deviation of 408 and that it emerges at angle 79o ⋅ Ιn that case which of the following is closest to the maximum possible value of the refractive index?
-
1.5
-
1.6
-
1.7
-
1.8
Solution
A.
1.5
C.
1.7
If μ is the refractive index of the material of prism, the from shell's law
This angle is greater than the 40o and deviation angle already given. For greaterμ deviation will be even higher. Hence μ of the given prism should be lesser than 1.5. Hence, the closest option will be 1.5
