Advertisements
Advertisements
Questions
Two waves of the same pitch have amplitudes in the ratio 1 : 3 What will be the ratio of their
- loudness,
- pitch?
Two waves of the same pitch have amplitudes in the ratio 1 : 3. What will be the ratio of their
- loudness, and
- frequencies ?
Advertisements
Solution
- Loudness ∝ (amplitude)2
Loudness is proportional to amplitude square Ratio of loudness = `"L"_1/"L"_2 =((a_1)^2)/((a_2)^2)`
= `(1)^2/(3)^2 = 1\/9`
= 1: 9 - Frequency of the sound wave has no effect on amplitude.
so, frequency remains the same if the pitch is unchanged.
∴ `"Pitch of first wave"/"Pitch of second wave"`=`1/1`
= 1 :1
RELATED QUESTIONS
Name the factor that determines Quality of the note
Name the factor that determines Pitch of the note.
What do you understand by the loudness of sound?
Name one property of waves that do not change when the wave passes from one medium to another.
The frequency is measured in second.
The time period of a wave is 2 s. Its frequency is ..........
The pitch of a stringed instrument is increased by .................. tension in string.
Smaller the membrane, .................. is the pitch.
If a drum is beaten hard, its loudness ................
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 |
Name the characteristic of sound related to its frequency
Figure shows two jars A and B containing water up to different heights. Which will produce sound of higher pitch when air is blown on them?
- Which of the following quality determines the loudness of a sound wave?
- wavelength
- frequency and
- amplitude
- How is loudness related to the quantity mentioned above in part (a)?
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of loudness?
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
Name the subjective property of light related to its wavelength.
Name the factors which determine the quality of a note.
What is acoustics?
