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

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? (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

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

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 $D_{m}$ is the angle of minimum deviation?

Since $D_{m} = (μ - 1) A$
& on increasing the wavelength, $μ$ decreases & hence $D_{m}$ decreases.

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?

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

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 $D_{m}$ is the angle of minimum deviation?

Since $D_{m} = (μ - 1) A$
& on increasing the wavelength, $μ$ decreases & hence $D_{m}$ decreases.