Target Exam

CUET

Subject

Physics

Chapter

Wave Optics

Question:

In Snell's law of refraction, the refractive index of the second medium with respect to the first medium ($n_{21}$) is

Options:

a characteristic of the medium 1 only

a characteristic of the medium 2 only

independent of the angle of incidence.

not dependent on the wavelength of light

Correct Answer:

independent of the angle of incidence.

Explanation:

The correct answer is Option (3) → independent of the angle of incidence.

According to Snell’s law,

$n_{21} = \frac{\sin i}{\sin r}$

The refractive index $n_{21}$ depends on the optical properties of both media and is independent of the angle of incidence for a given wavelength of light.

Correct option: Independent of the angle of incidence.