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A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second case
- a)sound will be louder but pitch will not be different
- b)sound will be louder and pitch will also be higher
- c)sound will be louder but pitch will be lowe
- d)both loudness and pitch will remain unaffected
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A key of a mechanical piano is struck gently and then struck again but...
The correct answer is option 'A'.
When a key of a mechanical piano is struck gently, the hammer inside the piano strikes the string with less force. This results in a lower volume or amplitude of the sound, but the pitch or frequency of the sound remains the same.
When the same key is struck again with more force, the hammer strikes the string with more force, resulting in a higher volume or amplitude of the sound. However, the pitch or frequency of the sound remains the same.
Option A is correct as it states that sound will be louder but pitch will not be different when a key of a mechanical piano is struck much harder than before.
Option B is not correct as the pitch or frequency of the sound remains the same when a key of a mechanical piano is struck much harder.
Option C is not correct as the pitch or frequency of the sound remains the same when a key of a mechanical piano is struck much harder.
Option D is not correct as the loudness of the sound increases when a key of a mechanical piano is struck much harder.
In summary, when a key of a mechanical piano is struck much harder than before, the sound will be louder but the pitch will remain the same.
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Most Upvoted Answer
A key of a mechanical piano is struck gently and then struck again but...
Explanation:
When a key of a mechanical piano is struck, it causes the corresponding string to vibrate and produce sound. The pitch of the sound is determined by the frequency of the vibration, while the loudness is determined by the amplitude of the vibration.
Effect of Striking the Key Gently:
- When the key is struck gently, it causes the corresponding string to vibrate with a certain frequency and amplitude.
- The frequency of the vibration remains the same, which means that the pitch of the sound produced will not change. This is because the frequency of a vibrating object is determined by its physical properties, such as its length, tension, and mass, which do not change when the key is struck gently.
- However, the amplitude of the vibration is relatively low, resulting in a softer sound.
Effect of Striking the Key Harder:
- When the key is struck harder, it causes the corresponding string to vibrate with a higher amplitude.
- The increased amplitude of the vibration leads to a louder sound, as the larger displacement of the string creates more compression and rarefaction in the air, resulting in a greater sound wave.
- However, the frequency of the vibration remains the same, so the pitch of the sound produced will not change.
Conclusion:
Based on the above explanations, we can conclude that when the key of a mechanical piano is struck gently, the sound will be softer. When the key is struck harder, the sound will be louder, but the pitch of the sound will remain the same. Therefore, the correct answer is option 'A': the sound will be louder but the pitch will not be different.
When a key of a mechanical piano is struck, it causes the corresponding string to vibrate and produce sound. The pitch of the sound is determined by the frequency of the vibration, while the loudness is determined by the amplitude of the vibration.
Effect of Striking the Key Gently:
- When the key is struck gently, it causes the corresponding string to vibrate with a certain frequency and amplitude.
- The frequency of the vibration remains the same, which means that the pitch of the sound produced will not change. This is because the frequency of a vibrating object is determined by its physical properties, such as its length, tension, and mass, which do not change when the key is struck gently.
- However, the amplitude of the vibration is relatively low, resulting in a softer sound.
Effect of Striking the Key Harder:
- When the key is struck harder, it causes the corresponding string to vibrate with a higher amplitude.
- The increased amplitude of the vibration leads to a louder sound, as the larger displacement of the string creates more compression and rarefaction in the air, resulting in a greater sound wave.
- However, the frequency of the vibration remains the same, so the pitch of the sound produced will not change.
Conclusion:
Based on the above explanations, we can conclude that when the key of a mechanical piano is struck gently, the sound will be softer. When the key is struck harder, the sound will be louder, but the pitch of the sound will remain the same. Therefore, the correct answer is option 'A': the sound will be louder but the pitch will not be different.
Community Answer
A key of a mechanical piano is struck gently and then struck again but...
You are correct
A is correct
as per the sound chapter it is correct
A is correct
as per the sound chapter it is correct
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A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second casea)sound will be louder but pitch will not be differentb)sound will be louder and pitch will also be higherc)sound will be louder but pitch will be lowed)both loudness and pitch will remain unaffectedCorrect answer is option 'A'. Can you explain this answer?
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A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second casea)sound will be louder but pitch will not be differentb)sound will be louder and pitch will also be higherc)sound will be louder but pitch will be lowed)both loudness and pitch will remain unaffectedCorrect answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second casea)sound will be louder but pitch will not be differentb)sound will be louder and pitch will also be higherc)sound will be louder but pitch will be lowed)both loudness and pitch will remain unaffectedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second casea)sound will be louder but pitch will not be differentb)sound will be louder and pitch will also be higherc)sound will be louder but pitch will be lowed)both loudness and pitch will remain unaffectedCorrect answer is option 'A'. Can you explain this answer?.
A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second casea)sound will be louder but pitch will not be differentb)sound will be louder and pitch will also be higherc)sound will be louder but pitch will be lowed)both loudness and pitch will remain unaffectedCorrect answer is option 'A'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second casea)sound will be louder but pitch will not be differentb)sound will be louder and pitch will also be higherc)sound will be louder but pitch will be lowed)both loudness and pitch will remain unaffectedCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A key of a mechanical piano is struck gently and then struck again but much harder this time. In tine second casea)sound will be louder but pitch will not be differentb)sound will be louder and pitch will also be higherc)sound will be louder but pitch will be lowed)both loudness and pitch will remain unaffectedCorrect answer is option 'A'. Can you explain this answer?.
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