A ray of light passes from one material into a material with a higher index of refraction.Which quantity remains unchanged?
A)The light's speed
B)The light's wavelength
C)The light ray's angle with the normal
D)The photon energy

Question

A ray of light passes from one material into a material with a higher index of refraction.Which quantity remains unchanged?​
A)​The light's speed
B)​The light's wavelength
C)​The light ray's angle with the normal
D)​The photon energy

Quizplus · Accepted Answer

When a ray of light passes from one material into another with a higher index of refraction, its speed and wavelength change due to the change in medium. However, the energy of the photons (quantified by their frequency multiplied by Planck's constant) remains unchanged, as the frequency of light does not change when it enters a different medium.

A Ray of Light Passes from One Material into a Material