What often happens to light when it travels from one medium to another

Although the speed changes and wavelength changes, the frequency of the light will be constant. The frequency, wavelength, and speed are related by: The change in speed that occurs when light passes from one medium to another is responsible for the bending of light, or refraction, that takes place at an interface.

Explanation:

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge