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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
Choose the correct word/words to complete the following sentence :
When sound travels in a medium ____________
Describe an experiment to show that in wave motion, only energy is transferred, but particles of medium do not move.
How does the following factor affect, if at all, the speed of sound in air:
Frequency of sound
How does the following factor affect, if at all, the speed of sound in air:
Temperature of air
How does the following factor affect, if at all, the speed of sound in air:
Pressure of air
The correct statement is :
Select the correct option:
The wavelength is the linear distance between the:
Is the speed of sound different in different media?
Does the speed of sound depend upon the direction of wind?
How are sound waves produced? How are sound waves transmitted from one place to the other?
