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To hear a distinct echo the time interval between the original sound and the reflected sound must be at least ________.
- a)1 second
- b)0.1 second
- c)0.2 second
- d)2 second
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
To hear a distinct echo the time interval between the original sound a...
- Echo: It is the repetition of the original sound because of reflection by some surface.
- Our brain retains a sound for 0.1 s. Thus, for us to be able to hear a distinct echo, the sound should take more than 0.1 s after starting from the source to get reflected and come back to us.
Most Upvoted Answer
To hear a distinct echo the time interval between the original sound a...
- Echo: It is the repetition of the original sound because of reflection by some surface.
- Our brain retains a sound for 0.1 s. Thus, for us to be able to hear a distinct echo, the sound should take more than 0.1 s after starting from the source to get reflected and come back to us.
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Community Answer
To hear a distinct echo the time interval between the original sound a...
The correct answer is option B: 0.1 second.
Explanation:
To understand why the time interval between the original sound and the reflected sound must be at least 0.1 second to hear a distinct echo, let's take a look at how sound waves and echoes work.
1. Sound Waves:
Sound is a form of energy that travels in the form of waves. When an object vibrates, it creates sound waves that propagate through the surrounding medium, such as air or water. These waves consist of compressions and rarefactions, which are regions of high and low pressure respectively.
2. Reflection of Sound:
When sound waves encounter a surface, they can be reflected, absorbed, or transmitted. In the case of reflection, the sound waves bounce off the surface and return to the source. This phenomenon is called an echo.
3. Echo Formation:
For an echo to be heard as a distinct sound, there must be a noticeable time delay between the original sound and the reflected sound. This delay allows the brain to perceive the two sounds as separate events.
4. Echo Perception:
The human brain can distinguish sounds that arrive within a certain time interval. If the time interval is too short, the brain perceives the sounds as a single event rather than a distinct echo. On the other hand, if the time interval is long enough, the brain can differentiate between the original sound and the reflected sound.
5. Echo Threshold:
The threshold for perceiving a distinct echo is generally considered to be around 0.1 second. This means that for an echo to be heard as a separate sound, the time interval between the original sound and the reflected sound must be at least 0.1 second. If the time interval is shorter than this, the brain combines the two sounds into one.
6. Example:
For instance, if you clap your hands in a large empty room, the sound waves will travel to the walls and bounce back as echoes. If the distance between you and the wall is such that the round-trip time for the sound waves is less than 0.1 second, the brain will not perceive the echoes as distinct sounds. However, if the round-trip time is greater than 0.1 second, you will be able to hear the echoes as separate sounds.
In conclusion, to hear a distinct echo, the time interval between the original sound and the reflected sound must be at least 0.1 second.
Explanation:
To understand why the time interval between the original sound and the reflected sound must be at least 0.1 second to hear a distinct echo, let's take a look at how sound waves and echoes work.
1. Sound Waves:
Sound is a form of energy that travels in the form of waves. When an object vibrates, it creates sound waves that propagate through the surrounding medium, such as air or water. These waves consist of compressions and rarefactions, which are regions of high and low pressure respectively.
2. Reflection of Sound:
When sound waves encounter a surface, they can be reflected, absorbed, or transmitted. In the case of reflection, the sound waves bounce off the surface and return to the source. This phenomenon is called an echo.
3. Echo Formation:
For an echo to be heard as a distinct sound, there must be a noticeable time delay between the original sound and the reflected sound. This delay allows the brain to perceive the two sounds as separate events.
4. Echo Perception:
The human brain can distinguish sounds that arrive within a certain time interval. If the time interval is too short, the brain perceives the sounds as a single event rather than a distinct echo. On the other hand, if the time interval is long enough, the brain can differentiate between the original sound and the reflected sound.
5. Echo Threshold:
The threshold for perceiving a distinct echo is generally considered to be around 0.1 second. This means that for an echo to be heard as a separate sound, the time interval between the original sound and the reflected sound must be at least 0.1 second. If the time interval is shorter than this, the brain combines the two sounds into one.
6. Example:
For instance, if you clap your hands in a large empty room, the sound waves will travel to the walls and bounce back as echoes. If the distance between you and the wall is such that the round-trip time for the sound waves is less than 0.1 second, the brain will not perceive the echoes as distinct sounds. However, if the round-trip time is greater than 0.1 second, you will be able to hear the echoes as separate sounds.
In conclusion, to hear a distinct echo, the time interval between the original sound and the reflected sound must be at least 0.1 second.
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To hear a distinct echo the time interval between the original sound and the reflected sound must be at least ________.a)1 secondb)0.1 secondc)0.2 secondd)2 secondCorrect answer is option 'B'. Can you explain this answer?
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