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प्रश्न
Does light travel faster in air than in water? Why?
उत्तर
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.
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संबंधित प्रश्न
Describe a simple experiment which demonstrates that the sound produced by a tuning fork is due to vibrations of its arms.
Explain with an example, the propagation of sound in a medium.
Name the two kinds of waves in form of which sound travels in a medium.
How is the frequency of a wave related to its time period?
How does the following factor affect, if at all, the speed of sound in air:
Temperature of air
Complete the following sentence :
A transverse wave is composed of crest and ____________.
State four differences between the sound wave and the light wave.
Does the speed of sound depend upon the direction of wind?
How will the following factors affect the speed of sound in air:
Pressure of air.
How will the following factors affect the speed of sound in air:
Wind.
