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प्रश्न
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उत्तर
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संबंधित प्रश्न
Write true or false for a given statement.
Loudness depends on frequency.
Fill in the blank.
The number of times a body vibrates in one second is called its ______.
Define time period.
Name the two characteristics of sound which differentiate two sounds from each other.
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
'Note' is a sound :
In fig. shows a snapshot of a wave from of frequency 50 Hz in a string. The numbers in the diagram represents distance in centimeters. For this wave motion, find
- wavelength
- amplitude
- velocity
What is sound? How is it produced?
How do the following factor affect the speed of sound in air?
Temperature of air
Match the following.
| Ultrasonics | Frequency below 20Hz |
| Speed of sound in air | Needs material medium |
| Infrasonics | 330ms-1 |
| Sound propagation | Frequency more than 20000 Hz |
