A) The velocity v remains unchanged but\[\lambda ,\] changes
B) The frequency v and wavelength remain unchanged but v changes
C) The wavelength\[\lambda ,\]remains unchanged but velocity v changes
D) The frequency v remains unchanged but\[\lambda ,\] changes
Correct Answer: D
Solution :
The electromagentic radiation when incident on glass plate is transmitted through it, this is known as refraction. Refraction is basically the change in direction of a wave due to a change in its velocity. This is most commonly seen when a light wave passes from one medium to another. At the boundary between the media, the waves phase velocity is altered, it changes direction and its wavelength increases or decreases but its frequency remains constant.
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