Advertisements
Advertisements
प्रश्न
Give an example to show that light travels faster than sound?
Advertisements
उत्तर
Lightning:
The most common example of showing that light travels faster than sound is lightning. Whenever lightning strikes, you see the lightning first and then hear the thunder after some time.
APPEARS IN
संबंधित प्रश्न
Select the correct alternative :
Wavelength is measured in
What are ultrasonics? Can you hear the ultrasonic sound?
Which wave property determines loudness?
Calculate the wavelength of a sound wave whose frequency is 220 Hz and speed is 440 m/s in a given medium.
Select the correct option:
In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:
State the relation between the wavelength and the frequency.
The wavelength of the vibrations produced on the surface of water is 2 cm. If the wave velocity is 16 ms-1, calculate:
- no. of waves produced in one second
- time required to produce one wave.
An earthquake produces which kind of sound before the mainshock wave begins
Which of the following statements are correct?
- Sound is produced by vibrations.
- Sound requires a medium for propagation.
- Light and sound both require a medium for propagation.
- Sound travels slower than light.
