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प्रश्न
Does light travel faster in air than in water? Why?
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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
There is no atmosphere on moon. Can you hear each other on the moon's surface?
Choose the correct word/words to complete the following sentence :
When sound travels in a medium ____________
How does the following factor affect, if at all, the speed of sound in air:
Frequency of sound
Complete the following sentence :
A longitudinal wave is composed of compression and ____________.
Complete the following sentence :
A transverse wave is composed of crest and ____________.
Select the correct option:
The wavelength is the linear distance between the:
Select the correct option:
The number of oscillations passing through a point in unit time is called:
State the main factors on which the speed of sound in a medium depends.
Compare approximately the speed of sound in air and steel.
State three important uses of echolocation.
