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प्रश्न
What change do you expect in the characteristics of a musical sound if
(i) Its frequency is increased,
(ii) Its amplitude is increased?
उत्तर
(i) If frequency of a musical sound is increased, its pitch will increase.
(ii) If amplitude of a musical sound is increased, its loudness will also increase.
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संबंधित प्रश्न
The longitudinal waves travel in a coiled spring at a rate of 4 m/s. The distance between two consecutive compressions is 20 cm. Find :
(i) Wavelength of the wave (ii) Frequency of the wave
Select the correct option:
A part of the longitudinal wave in which particles of the medium are closer than the normal particles is called:
From diagram given below calculate:
- velocity of P and Q
- frequency of P, when frequency of Q is 512 Hz.
Assume that both wave are traveling in same medium.
How is sound produced?
The time interval between a lighting flash and the first sound of thunder was found to be 6 s. If the speed of sound in air is 330 ms-1, find the distance of the flash from the observer.
A person fires a gun and other boy at a distance hears the sound of the fire 2.5 s after seeing the flash. If the speed of sound in air is 330 ms-1, find the distance between the boys.
Sound is a ______ wave and needs a material medium to travel.
Match the following.
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
Match the following
| 1. | Infrasonic | (a) | Compressions |
| 2. | Echo | (b) | 22 kHz |
| 3. | Ultrasonic | (c) | 10 Hz |
| 4. | High-pressure region | (d) | Ultrasonography |
