Class 9 Exam > Class 9 Questions > Match the following with correct response.(1)...
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Match the following with correct response.
(1) Audible range
(2) Infrasonic
(3) Ultrasonic
(4) Supersonic
(A) Less than 20 Hz
(B) Speed greater than sound in air
(C) More than 20,000 Hz
(D) 20 Hz to 20,000 Hz
(1) Audible range
(2) Infrasonic
(3) Ultrasonic
(4) Supersonic
(A) Less than 20 Hz
(B) Speed greater than sound in air
(C) More than 20,000 Hz
(D) 20 Hz to 20,000 Hz
- a)1-D, 2-A, 3-C, 4-B
- b)1-A, 2-C, 3-B, 4-D
- c)1-C, 2-B, 3-D, 4-A
- d)1-B, 2-D, 3-A, 4-C
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Match the following with correct response.(1) Audible range(2) Infraso...
The sound whose frequency lies between 20 Hz and 20000 Hz which we are able to hear is called audible sound.
Inaudible sounds having frequency less than 20 Hz are known as infrasonic sounds.
Inaudible sounds having frequecy more than 20000 Hz are known as ultrasonic sounds.
When a body is travelling at a speed greater than the speed of sound,we say that the body is travelling at a supersonic speed.
Most Upvoted Answer
Match the following with correct response.(1) Audible range(2) Infraso...
Audible range: The range of frequencies that can be heard by the human ear is called the audible range. It typically ranges from 20 Hz to 20,000 Hz.
Infrasonic: Infrasonic refers to sound waves with frequencies below the audible range of human hearing, i.e., below 20 Hz. These low-frequency waves are often produced by natural phenomena like earthquakes or certain animal calls.
Ultrasonic: Ultrasonic refers to sound waves with frequencies above the audible range of human hearing, i.e., above 20,000 Hz. Ultrasonic waves are commonly used in various applications such as medical imaging, cleaning, and pest control.
Supersonic: Supersonic refers to speeds that are greater than the speed of sound in air. The speed of sound in air is approximately 343 meters per second at room temperature. When an object moves at a speed greater than this, it is said to be traveling at supersonic speed.
Match the following with the correct response:
1. Audible range: 20 Hz to 20,000 Hz - (D)
2. Infrasonic: Less than 20 Hz - (A)
3. Ultrasonic: More than 20,000 Hz - (C)
4. Supersonic: Speed greater than sound in air - (B)
Explanation:
- Audible range falls between 20 Hz and 20,000 Hz, which is the range of frequencies that can be heard by the human ear. Hence, the correct response for audible range is (D).
- Infrasonic waves have frequencies below 20 Hz, which is lower than the audible range. These frequencies are usually felt rather than heard by humans. Therefore, the correct response for infrasonic is (A).
- Ultrasonic waves have frequencies above 20,000 Hz, which is higher than the audible range. These frequencies cannot be heard by humans, but they have various practical applications. Hence, the correct response for ultrasonic is (C).
- Supersonic refers to speeds greater than the speed of sound in air. It is not directly related to the frequency of sound. Therefore, the correct response for supersonic is (B).
By matching the given characteristics of each term with their corresponding descriptions, we can determine that option (A) is the correct answer.
Infrasonic: Infrasonic refers to sound waves with frequencies below the audible range of human hearing, i.e., below 20 Hz. These low-frequency waves are often produced by natural phenomena like earthquakes or certain animal calls.
Ultrasonic: Ultrasonic refers to sound waves with frequencies above the audible range of human hearing, i.e., above 20,000 Hz. Ultrasonic waves are commonly used in various applications such as medical imaging, cleaning, and pest control.
Supersonic: Supersonic refers to speeds that are greater than the speed of sound in air. The speed of sound in air is approximately 343 meters per second at room temperature. When an object moves at a speed greater than this, it is said to be traveling at supersonic speed.
Match the following with the correct response:
1. Audible range: 20 Hz to 20,000 Hz - (D)
2. Infrasonic: Less than 20 Hz - (A)
3. Ultrasonic: More than 20,000 Hz - (C)
4. Supersonic: Speed greater than sound in air - (B)
Explanation:
- Audible range falls between 20 Hz and 20,000 Hz, which is the range of frequencies that can be heard by the human ear. Hence, the correct response for audible range is (D).
- Infrasonic waves have frequencies below 20 Hz, which is lower than the audible range. These frequencies are usually felt rather than heard by humans. Therefore, the correct response for infrasonic is (A).
- Ultrasonic waves have frequencies above 20,000 Hz, which is higher than the audible range. These frequencies cannot be heard by humans, but they have various practical applications. Hence, the correct response for ultrasonic is (C).
- Supersonic refers to speeds greater than the speed of sound in air. It is not directly related to the frequency of sound. Therefore, the correct response for supersonic is (B).
By matching the given characteristics of each term with their corresponding descriptions, we can determine that option (A) is the correct answer.
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