When light waves pass from one medium to another (like air to glass), their speed and wavelength change, but their frequency remains constant. The frequency of a wave is determined by the source emitting the light and does not change when the medium changes.
Light waves are incident on an air-glass boundary. Some of the light waves are reflected and some are refracted in the glass. Which one of the following properties is the same for the incident wave and the refracted wave?
Asked in UPSC NDA 1 2021 · Topic: Optics (Reflection and Refraction at plane and spherical surfaces)
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