JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Analyzing +4 | -1

Assertion: In visible light

\mu_{\mathrm{r}}<\mu_{\mathrm{v}}

Reason: This follows from Cauchy's formula

\mu=A+\frac{B}{\lambda^2}+\frac{C}{\lambda^4}

View answer and explanation

Correct option: A

If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion

Option A (If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion) is correct because Cauchy's formula explains the wavelength dependence of the refractive index, leading to a higher refractive index for violet light compared to red light.

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