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Can Sound Waves Pass Through Vacuum?

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प्रश्न

Can sound waves pass through vacuum?
एक पंक्ति में उत्तर
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उत्तर

Sound waves being mechanical waves need a material medium for their propagation, they cannot travel in vacuum.
 
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अध्याय 3: Sound - Exercise 3.1 ii [पृष्ठ १३६]

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फ्रैंक Physics Part 2 [English] Class 10 ICSE
अध्याय 3 Sound
Exercise 3.1 ii | Q 5 | पृष्ठ १३६

संबंधित प्रश्न

Fig. shows three ways in which a string of length l in an instrument can vibrate.

(i) (ii) (iii)
  1. Which of the diagram shows the principle note?
  2. Which vibration has the frequency four times that of the first?
  3. Which vibration is of the longest wavelength?
  4. What is the ratio of the frequency of the vibration in (i) and (ii)?

A boy fires a gun and hears the echo 2 seconds later. If he is 480 m away from a wall, calculate the velocity of sound in air.

What is a transverse wave? In which medium: solid, liquid or gas, can it be produced?


How are the wave velocity V, frequency f and wavelength λ of a wave related? Derive the relationship.


Define sound ranging.


A thin metal plate is placed against the teeth of cog wheel. Cog wheel is rotated at a speed of 120 rotations per minute and has 160 teeth. Calculate:

  1. frequency of node produced.
  2. speed of sound, if wavelength is 1.05 m.
  3. what will be the effect when the speed of cog wheel is doubled?

The diagram given below shows a displacement distance graph of a wave. If the velocity of wave is 160 ms-1, calculate:

  1. wavelength
  2. frequency
  3. amplitude.


Match the following.

1. Tuning fork The point where density of air is maximum
2. Sound Maximum displacement from the equilibrium position.
3. Compressions The sound whose frequency is greater than 20,000 Hz.
4. Amplitude Longitudinal wave.
5. Ultasonics Production of sound.

Sound can travel through solids, gases, liquids, and even vacuum.


Suppose that a sound wave and a light wave have the same frequency, then which one has a longer wavelength?


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