Question

Which set of variables is primarily involved in refraction at a spherical surface, as opposed to refraction at a plane surface?

Options

• Wavelength and amplitude

• Refractive indices and depth only

• u, v, R, n₁, n₂

• Focal length and aperture only

Answer 1

For refraction at a spherical surface, the main variables are u, v, R, n₁, n₂. In contrast, for a plane surface, the main variables are the refractive indices and depth, producing the apparent depth type effect.