Advertisements
Advertisements
प्रश्न
Does light travel faster in air than in water? Why?
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
If you place your ear close to an iron railing which is tapped some distance away, you hear the sound twice. Explain why?
How does the following factor affect, if at all, the speed of sound in air:
Frequency of sound
Select the correct option:
The wavelength is the linear distance between the:
What is meant by the term wave motion?
State the main factors on which the speed of sound in a medium depends.
Does ultrasonic in a medium travel faster than the audible sound?
Compare approximately the speed of sound in air and steel.
Describe in brief, with the aid of a sketch diagram, an experiment to demonstrate that a material medium is necessary to transmit sound.
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.
