Key Concept: Amplitude, Loudness, Frequency, Pitch
b) Both Assertion and Reason are true, but Reason is NOT the correct explanation of Assertion.
[Solution Description]
The assertion states that the loudness of a sound produced by a vibrating object is directly proportional to the amplitude of vibration. This is true because loudness is indeed proportional to the square of the amplitude of vibration. A larger amplitude results in a louder sound.
The reason states that the pitch of a sound is determined by its frequency, while loudness is determined by the square of the amplitude of vibration. This is also true. The frequency of vibration determines the pitch; higher frequencies result in higher pitches, and lower frequencies result in lower pitches. Additionally, loudness is determined by the square of the amplitude of vibration, meaning that if the amplitude doubles, the loudness increases by a factor of four.
However, while both statements are true, the reason does not explain the assertion. The assertion is about the relationship between loudness and amplitude, while the reason provides information about both pitch and loudness but does not directly explain why loudness is proportional to amplitude.
Your Answer is correct.
b) Both Assertion and Reason are true, but Reason is NOT the correct explanation of Assertion.
[Solution Description]
The assertion states that the loudness of a sound produced by a vibrating object is directly proportional to the amplitude of vibration. This is true because loudness is indeed proportional to the square of the amplitude of vibration. A larger amplitude results in a louder sound.
The reason states that the pitch of a sound is determined by its frequency, while loudness is determined by the square of the amplitude of vibration. This is also true. The frequency of vibration determines the pitch; higher frequencies result in higher pitches, and lower frequencies result in lower pitches. Additionally, loudness is determined by the square of the amplitude of vibration, meaning that if the amplitude doubles, the loudness increases by a factor of four.
However, while both statements are true, the reason does not explain the assertion. The assertion is about the relationship between loudness and amplitude, while the reason provides information about both pitch and loudness but does not directly explain why loudness is proportional to amplitude.