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प्रश्न
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उत्तर
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संबंधित प्रश्न
A person is listening to a tone of 500 Hz sitting at a distance of 450 m from the source of the sound. What is the time interval between successive compressions from the source?
Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
Distinguish between loudness and intensity of sound.
In fig. shows a snap shot of a wave from of frequency 50 Hz in a string. The numbers in the diagram represents distance in centimeters. Fpr the wave motion, find
(a) Wavelength,
(b) Amplitude,
(c) Velocity.
Select the correct option:
In case of longitudinal waves, the particles of the medium vibrate:
Select the correct option:
The longitudinal waves can propagate only in
Select the correct option:
A part of longitudinal wave in which particles of the medium are farther away than the normal particles is called :
Match the following
| 1. | Infrasonic | (a) | Compressions |
| 2. | Echo | (b) | 22 kHz |
| 3. | Ultrasonic | (c) | 10 Hz |
| 4. | High-pressure region | (d) | Ultrasonography |
Give scientific reasons.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
