Sound

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

 
 
 
 

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

 
 
 
 

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:

 
 
 
 

Threshold of hearing has

 
 
 
 

Sound travels faster in

 
 
 
 

Which is NOT true for sound?

 
 
 
 

Sounds having frequency are called infrasonic waves:

 
 
 
 

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?

 
 
 
 

Question 1 of 10

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  15. Differentiate between noise and music. Explain how noise is a nuisance.
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