Sound

Sound travels faster in

 
 
 
 

Frequency of sound waves in air is doubled, its speed will:

 
 
 
 

Intensity of threshold of pain (loudest audible sound without pain to ears):

 
 
 
 

Which of the following properties of waves is directly related to the loudness of sound?

 
 
 
 

Sounds having frequency are called infrasonic waves:

 
 
 
 

Speed of sound in air at 0°C is 332 m/s. What is its speed in vacuum?

 
 
 
 

Minimum distance of a person from obstacle for sound to hear echo is:

 
 
 
 

A silent whistle is used to train a dog. When the trainer blows the whistle, humans do not hear it, but dogs do. Its possible frequency is:

 
 
 
 

Which is NOT true for sound?

 
 
 
 

Threshold of hearing has

 
 
 
 

Question 1 of 10

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  13. What is intensity of sound? What is the range of intensity of audible sound? Differentiate between loudness and intensity of sound.
  14. Define intensity level. Derive the formula for its decibel scale.
  15. Differentiate between noise and music. Explain how noise is a nuisance.
  16. What is acoustics and acoustic protection? How does their study help in the construction of different structures?
  17. What is the audible frequency range? Explain in detail.
  18. What are ultrasounds? Give their uses in different fields of life.
  19. Why does sound travel faster in solids than in liquids and gases?
  20. Why are we able to distinguish between two sounds having the same loudness?

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