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Does light travel faster in air than in water? Why? - Physics

Short Note

Does light travel faster in air than in water? Why?

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Solution

Yes, light travels faster in the air than water. Because light does not require any medium for their propagation and they are not mechanical waves. The quantities which oscillate in light are mechanical and electric fields. And electric and magnetic fields decrease with the medium in between them. So, light travels faster in the air than water.

Concept: Sound Need a Medium to Travel
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APPEARS IN

Frank Class 9 Physics ICSE
Chapter 7 Sound
Exercise | Q 27 | Page 286
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