1. Tardigrade
  2. Question
  3. Physics
  4. The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if Dm is the angle of minimum deviation?Physics Question Image

JEE MainJEE Main 2019Ray Optics and Optical Instruments

Solution:

Since Dm=(μ−1)A
& on increasing the wavelength, μ decreases & hence Dm decreases.