Question

Refractive index :

• A. is actual property of the substance
• B. depends on the wavelength of light used to measure
• C. sensitive to the eye
• D. none of these

Answer 1

The correct option is B depends on the wavelength of light used to measure

The refractive index varies with the wavelength of light.

We know that $\mu =\frac{c}{v}$

c=velocity of light in air

$v$=velocity of light in specific medium

Also $v=\lambda f$

$\lambda$ is wavelength of light.

Hence refractive index depends on wavelength.