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प्रश्न
Loudness is determined by the __________ of vibration.
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उत्तर
Loudness is determined by the amplitude of vibration.
Explanation:
The loudness of sound depends on its amplitude. When the amplitude of the vibration is large, the sound produced is loud. When the amplitude is small, the sound produced is feeble.
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संबंधित प्रश्न
State the safe limit of sound level in terms of decibel for human hearing.
The time period of a wave is 2 s. Its frequency is ..........
Match the following
| column A | column B |
| (A) Amplitude | (1) frequency |
| (B) Frequency | (2) amplitude |
| (C) Loudness | (3)maximum displacement on either side |
| (D) Pitch | (4) presence of other frequencies |
| (E) Waveform | (5) 1/ time period |
Obtain relationship between the time period and frequency.
Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.
How do they differ in
(a) loudness,
(b) pitch and
(c) quality
If the amplitude of a wave is doubled, what will be the effect on its loudness?
Explain the following and illustrate your answer by drawing appropriate diagram:
Pitch
Draw a diagram to show the waveforms of a pure note and a musical note, of the same pitch and same loudness.
A 0.6 m long stretched wire is made to vibrate in two different modes as shown in figure
(a)
(b)
(i) If the frequency of the note produced in (b) is n, what is the frequency in case (a)?
(ii) In which case (a) or (b), is the note louder? Give reasons.
(iii) In which case is the pitch higher? Give reason.
What is acoustics?
