Question

If `"^imu_j`  represents refractive index, when a light ray goes from medium i to medium j, then the product `"^2mu_1 xx ^3mu_2 xx ^4mu_3` is equal to ______.

Options

• `"^3mu_2`

• `"^4mu_2`

• `"^4mu_1`

• `"^3mu_1`

Answer 1

If `"^imu_j`  represents refractive index, when a light ray goes from medium i to medium j, then the product `"^2mu_1 xx ^3mu_2 xx ^4mu_3` is equal to `underline("^4mu_1)`.

Explanation:

When refraction takes place through a multiple media, we have

`""^amu_c = ""^amu_b xx ^bmu_c`

`therefore ""^2mu_1 xx ^3mu_2 xx ^4mu_3 = "^4mu_1`