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प्रश्न
What is longitudinal wave?
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उत्तर
The wave in which the particles of the medium vibrate about their mean positions in the direction of propagation of sound is called the longitudinal wave. Such a wave can be produced in solids, liquids, and gases.
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संबंधित प्रश्न
Loudness is determined by the __________ of vibration.
A person is standing at the seashore. An observer on the ship which is anchored in between a vertical cliff and the person on the shore fires a gun. The person on the shore hears two sounds, 2 seconds and 3 seconds after seeing the smoke of the fired gun. If the speed of sound in the air is 320 ms-1 then calculate:
1) the distance between the observer on the ship and the person on the shore.
2) the distance between the cliff and the observer on the ship.
The quality of a sound depends on the amplitude of wave.
Which of the following determines the loudness of a sound wave?
If the amplitude of a wave is doubled, what will be the effect on its loudness?
Two waves of the same pitch have amplitudes in the ratio 1 : 3. What will be the ratio of their :
(i) intensities and
(ii) frequencies
Explain the following and illustrate your answer by drawing appropriate diagram:
Quality of a musical note.
Which characteristics of sound will change if there is a change in its amplitude and its waveform.
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?
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.
