Bissoy.com
Doctors Medicines MCQs Q&A

An average human being can hear sound of frequency upto:

An average human being can hear sound of frequency upto: Correct Answer 20 kHz

Explanation:

  • Frequency: The number of waves that pass a fixed point in unit time.
    • The unit of frequency is Hertz (Hz).
  • Infrasonic sounds have a frequency of less than 20 Hz and these are generally produced by sources of a bigger size such as earthquakes, volcanic eruptions, etc.
  • Sound waves with frequencies below the audible range are called infrasonic.
    • Audible sounds have the frequency of 20-20000 Hz since these are sensitive to the human ears
  • And if the frequency is greater or less than audible frequency, the human ear won't be able to sense it
  • Ultrasonic sounds have a frequency greater than 20000 Hz and certain creatures such as dogs, cats, a bats can hear this kind of sound.

[ alt="F1 J.K 27.5.20 Pallavi D1" src="//storage.googleapis.com/tb-img/production/20/05/F1_J.K_27.5.20_Pallavi_D1.png" style="width: 400px; height: 216px;">

  • Human ears are capable of here 20 Hz to 20000 Hz.
  • Bats are capable of here sound above 20 kHz (ultrasound).
  • Elephants are capable of here sound below 20 Hz (infrasound).

Related Questions

"Too often we try to solve human problem with non-human tools and in terms of non-human data. It is my simple thesis that a human problem requires a human solution. First we have to learn to recognise a human problem when we see one; and second, upon recognising it, we have to learn to deal with it as such and not as it were something else. A human problem to be brought to a human solution requires human data and human tools". Who said this?
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: As the source continues to vibrate the medium, the vibrations propagate away from the source at the speed of sound, thus forming the sound wave. B: The sound source creates vibrations in the surrounding medium.  C: The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker. D: Sound can propagate through a medium such as air, water, and solids as longitudinal waves and also as a transverse wave in solids.
Read the given statement and conclusions carefully and decide which of the conclusions logically follow(s) from the statement. Statement: Sound cannot travel in vacuum. Conclusions: I. We cannot hear sound of explosion in vacuum. II. We cannot hear sound of explosion in atmosphere
Which of the following statements are not true for sound ? (a) Sound waves are transverse waves. (b) Audible sound waves have frequency range of 20 kHz and above. (c) Sound waves require medium for propagation. (d) Non-periodic sound waves are termed as ‘Noise’. 
A man is moving towards a wall with a source of sound in his hand. Frequency of source = 50Hz. Speed of man = 8m/s. If the man sends one pulse of sound, what will be the frequency heard by him after sound reflects off the wall? Speed of sound = 330m/s.
Questions below followed by three quantities. Find the relationship between them. Quantity I: In a class with a certain number of students if a teacher weighing 78 kg is added, then average weight of class is increased by 2 kg. If one more teacher weighing 66 kg is added, then the average weight of the class increases by 3.5 kg over the original average. What is the original average weight (in kg) of the class? Quantity II: The average age of 16 students and their teacher's age is 16 years. If the teacher's age is excluded, the average reduces by 2. What is the teacher's age? Quantity III: Average weight of three friends A, B and C is 46 kg. Another person D joins the group and now the average is 45 kg. If another person E whose weight is 6 kg more than D, joins the group replacing A, then average weight of B, C, D and E becomes 47 kg. What is the weight of A (in kg)?
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it. Awareness means the capacity to see a coffee pot and hear the birds sing in one's own way, and not the way one was taught. It may be assumed on good grounds that seeing and hearing have a different quality for infants than for grownups and that they are more aesthetic and less intellectual in the first years of life. A little boy sees and hears birds with delight. Then the 'good father' comes along and feels he should 'share' the experience and help his son 'develop'. He says, "That's a jay and this is a sparrow." The moment the little boy is concerned with which is a jay and which is a sparrow, he can no longer see the birds or hear them sing. He has to see and hear them the way his father wants him to. Father has good reasons on his side: since few people can afford to go through life listening to the birds sing, sooner the little boy starts his 'education' the better. Maybe he will be an ornithologist when he grows up.
What does the writer mean by 'awareness'?
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it. Awareness means the capacity to see a coffee pot and hear the birds sing in one's own way, and not the way one was taught. It may be assumed on good grounds that seeing and hearing have a different quality for infants than for grownups and that they are more aesthetic and less intellectual in the first years of life. A little boy sees and hears birds with delight. Then the 'good father' comes along and feels he should 'share' the experience and help his son 'develop'. He says, "That's a jay and this is a sparrow." The moment the little boy is concerned with which is a jay and which is a sparrow, he can no longer see the birds or hear them sing. He has to see and hear them the way his father wants him to. Father has good reasons on his side: since few people can afford to go through life listening to the birds sing, sooner the little boy starts his 'education' the better. Maybe he will be an ornithologist when he grows up.
How do children perceive things around them?
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it. Awareness means the capacity to see a coffee pot and hear the birds sing in one's own way, and not the way one was taught. It may be assumed on good grounds that seeing and hearing have a different quality for infants than for grownups and that they are more aesthetic and less intellectual in the first years of life. A little boy sees and hears birds with delight. Then the 'good father' comes along and feels he should 'share' the experience and help his son 'develop'. He says, "That's a jay and this is a sparrow." The moment the little boy is concerned with which is a jay and which is a sparrow, he can no longer see the birds or hear them sing. He has to see and hear them the way his father wants him to. Father has good reasons on his side: since few people can afford to go through life listening to the birds sing, sooner the little boy starts his 'education' the better. Maybe he will be an ornithologist when he grows up.
What would the 'good father' do?
Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it. Awareness means the capacity to see a coffee pot and hear the birds sing in one's own way, and not the way one was taught. It may be assumed on good grounds that seeing and hearing have a different quality for infants than for grownups and that they are more aesthetic and less intellectual in the first years of life. A little boy sees and hears birds with delight. Then the 'good father' comes along and feels he should 'share' the experience and help his son 'develop'. He says, "That's a jay and this is a sparrow." The moment the little boy is concerned with which is a jay and which is a sparrow, he can no longer see the birds or hear them sing. He has to see and hear them the way his father wants him to. Father has good reasons on his side: since few people can afford to go through life listening to the birds sing, sooner the little boy starts his 'education' the better. Maybe he will be an ornithologist when he grows up.
What does an Ornithologist study?