search
arrow-left Previous
Next arrow-right
Q: It is found that during dispersion of while light by a glass prism, the more a colour component is bent, the more is the refractive index of the glass for that colour component. If μY, μV and μG are refractive indices for yellow, violet and green lights, respectively, then which of the following relations between them is correct?
  • A. μY > μV > μG
  • B. μY = μV = μG
  • C. μV > μG > μY
  • D. μG > μY > μV
Correct Answer: Option C - The colours of VIBGYOR arranged in the increasing order of their refractive indices will be – Red < Orange < Yellow < Green < Blue < Indigo < violet. ( μR) < ( μO) < ( μY) < ( μG) < ( μB) < ( μI) < ( μV) Hence, μV > μG > μY is the correct.
C. The colours of VIBGYOR arranged in the increasing order of their refractive indices will be – Red < Orange < Yellow < Green < Blue < Indigo < violet. ( μR) < ( μO) < ( μY) < ( μG) < ( μB) < ( μI) < ( μV) Hence, μV > μG > μY is the correct.

Explanations:

The colours of VIBGYOR arranged in the increasing order of their refractive indices will be – Red < Orange < Yellow < Green < Blue < Indigo < violet. ( μR) < ( μO) < ( μY) < ( μG) < ( μB) < ( μI) < ( μV) Hence, μV > μG > μY is the correct.