English

What is the range of frequencies associated with infrasound? - Science

Advertisements
Advertisements

Question

What is the range of frequencies associated with infrasound?

One Line Answer
Advertisements

Solution

Sounds of frequencies below 20 Hz are called infrasonic sounds or infrasound.

shaalaa.com
  Is there an error in this question or solution?
Chapter 12: Sound - Intext Questions [Page 170]

APPEARS IN

NCERT Science [English] Class 9
Chapter 12 Sound
Intext Questions | Q 2.1 | Page 170

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

What is the range of frequencies associated with ultrasound?


A person has a hearing range from 20 Hz to 20 kHz. What are the typical wavelengths of sound waves in air corresponding to these two frequencies? Take the speed of sound in air as 344 m s−1.


Fill in the blanks with suitable words.
 A sound wave consists of places of higher pressure called ................. and places of................pressure called.................


Name the organs of hearing in our body.


What type of sound waves are produced by a vibrating simple pendulum ?


Which of the following sound frequencies cannot be heard by a human ear ?

(i) 10 Hz
(ii) 100 Hz
(iii) 10,000 Hz
(iv) 15 Hz
(v) 40,000 Hz 


What are infrasonic waves ? Name two animals which produce infrasonic waves.


What are ultrasonic waves ? Name two animals which can produce ultrasonic waves.


Three different vibrating objects produce three-types of sounds X, Y and Z. Sounds X and Y cannot be heard by a man having normal range of hearing but sound Z can be heard easily. The sound X is used in hospitals to break kidney stones of a patient into fine grains which then get flushed out with urine. The sound Y is similar to that which is produced during an earthquake before the main shock wave is generated.

(a) What type of sounds are (i) X (ii) Y, and (iii) Z ?
(b) Name one device which can produce sound like X.
(c) Name one device in a science laboratory which can produce sound like Y.
(d) Name one device in our homes which can produce sound like Z.
(e) What is the frequency range of sounds like Z ?


For hearing the loudest ticking sound heard by the ear, find the angle x in Fig.12.4.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×