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प्रश्न
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उत्तर
| Transverse waves | Long itud ina I waves |
| 1. In these waves, the vibrations of the particles are perpendicular to the direction of wave and form crest and trough in the medium. | 1. In these waves, the vibrations of the particles are along the direction of propagation of wave and form compress ons and rarefactions in the medium |
| 2. These waves can be formed only in the medium which possesses rigidity. Hence, they can travel only in soIids and on the surface of liquids. | 2. These waves can travel in solids, liquids as well as gases. |
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संबंधित प्रश्न
Write true or false for a given statement.
The frequency is measured in hertz.
The flash of a gun is seen by a man 3 seconds before the sound is heard. Calculate the distance of the gun from the man (Speed of sound in air is 332 m/s).
Sound is generated by the rhythmic ______ of an object.
A bat emits an ultrasonic sound of frequency 0.25 MHz. Calculate the time in which one vibration is completed.
The diagram given below shows a displacement distance graph of a wave. If the velocity of wave is 160 ms-1, calculate:
- wavelength
- frequency
- amplitude.
How is sound produced?
Distinguish between light and sound waves. What are the consequences of the large difference in the speed of sound and that of light? Briefly explain them.
Consider the statement given below and choose the correct option.
Assertion: When lightning strikes, the sound is heard a little after the flash is seen.
Reason: The velocity of light is greater than that of the sound.
A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through ______.
Describe with diagram, how compressions and rarefactions are produced.
