A) Violet
B) Red
C) Blue
D) Green
Correct Answer: A
Solution :
We know that wavelength of violet light is minimum and that of red light is maximum. \[\therefore \] \[{{\lambda }_{R}}>{{\lambda }_{V}}\] From Cauchys dispersion relation \[\mu \propto \frac{1}{\lambda }\] So,\[{{\mu }_{V}}>{{\mu }_{R}},\,\,ie,\]refractive index of glass for violet light is maximum. Hence, from the formula \[{{\delta }_{m}}=(\mu -1)A\] where \[{{\delta }_{m}}\] is angle of deviation and \[A\] the angle of prism, violet light deviates the most and red the least.You need to login to perform this action.
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