Discussion :: Physics - Section 1 (Q.No.30)
Sound of frequency below 20 Hz is called
Answer: Option B
No answer description available for this question.
|Amaresh Singh said: (Aug 14, 2011)|
|Because less than or equal to 20 Hz man can not hear the sound.
Man can hear between 20 Hz and 20000 Hz.
|Nishtha Sharma said: (Aug 31, 2011)|
|Infrasonic : less than 20Hz (can not be heard by humans)
Ultrasonic : between 20Hz and 20kHz (can be heard by humans)
Supersonic : more than 20kHz (can not be heard by humans)
|Uday said: (Nov 15, 2011)|
|Biplab said: (Sep 1, 2012)|
|Aniket said: (Feb 20, 2013)|
|Is ultrasonic and audio frequency same terms?|
|Madhav said: (Jun 30, 2013)|
|Infrasonic. The relevance of this particular frequency is that it is the lower limit of hearing the normal people.|
|Cm Prasad said: (Nov 5, 2013)|
|@Nishtha you are wrong.
Infrasonic - frequency less than 20 hz (can not be hear).
Visible light - frequency 20 hz to 20, 000 hz (can be hear).
Ultrasonic - more than 20, 000 (can not be hear).
NOTE - all three forms relate with frequency but supersonic not.
Supersonic relates with velocity.
Hence supersonic - the sound wave having speed more than 332 meter/second (velocity of sound in air).
Supersonic jet planes named on property because they have speed more than 332 m/s.
|S.Abhay Chakra said: (Aug 10, 2014)|
|The human beings cannot listen to the sound which is below 20Hz. Only some type of animals can hear it like bat's.|
|Ashwani said: (Jan 15, 2015)|
|Because man cannot hear sound less than 20 Hz.|
|Tracy said: (Sep 29, 2015)|
|How much HZ is needed for a human being?|
|Jacko said: (Jan 24, 2016)|
20HZ - 20000HZ(sometimes 16000 HZ).
|Elakiya Jyothi said: (Jun 4, 2016)|
|Which frequency makes man's ear dum?|
|Aaditya Kumar said: (Aug 3, 2016)|
|Name some animals which hear below 20Hz.|
|Deep said: (Dec 8, 2016)|
|You are right. I agree @Cm Prasad.|
|Dillon Jordan said: (Jan 6, 2017)|
|Can someone explain it in depth?|
|Sandeep said: (Mar 11, 2017)|
|Infrasonic : sound frequency less than 20HZ.
Ultrasonic : sound frequency greater than 20kHz.
Supersonic : it is not the frequency range it denotes the speed of objects which have speed greater then the speed of sound i.e. 330m/s. It produces shock waves.
|Tsibuah said: (Jul 30, 2017)|
|Scholars, how then can humans prevent the biological effects that may be induced by supersonic?|
|Dillon Jordan said: (Aug 24, 2017)|
|Ogechi said: (Nov 24, 2017)|
|Steph said: (Jan 24, 2018)|
|Thanks for the information.|
|Kiran said: (Jan 29, 2018)|
|What is the speed of the sound?|
|Prasad Reddy said: (Apr 7, 2018)|
|Can a snake listen the sound of frequency below 20 HZs sitting on a tree?|
|Satish said: (Apr 9, 2018)|
|Nice explanation @Sandeep.|
|Govind said: (May 30, 2018)|
|Infrasonic wave- Below 20hz frequency (Dogs can listen it).
Audible sound-. 20 to 20000 Hz Human can listen only of this frequency range sound.
Ultrasonic-beyond 20000 Hz (man cannot listen to it but bats can listen to these sounds).
|Muzamil said: (Jun 13, 2018)|
|If we produce a sound more than 20mhz, can we feel noise or we will not listen totally?|
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