Advertisements
Advertisements
प्रश्न
State three factors on which loudness of sound heard by a listener depends.
Advertisements
उत्तर
THREE FACTOR FOR LOUDNESS OF SOUND:
- Surface area of the sounding body. i.e. is directly proportional to the surface area of vibrating body.
- On the distance of the source of sound, i.e. decreases with distance.
- On amplitude of wave i.e. increases with amplitude.
APPEARS IN
संबंधित प्रश्न
What is an echo
Name one property of waves that do not change when the wave passes from one medium to another.
The time period of a wave is 2 s. Its frequency is ..........
Figure shows four waves A, B, C, and D
Name the wave which shows
(a) a note from a musical instrument,
(b) a soft note
(c) a shrill note.
Two waves of the same pitch have amplitudes in the ratio 1:3. What will be the ratio of frequencies?
Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
Three musical instruments give out notes at the frequencies listed below. Flute: 400 Hz; Guitar: 200 Hz; Trumpet: 500 Hz. Which one of these has the highest 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.
Give a scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
