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प्रश्न
What is sound? Explain with example how does sound travel in a medium.
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उत्तर
Sound is defined as form of energy that produces the sensation of hearing in our ears. The sound travels in medium through energy transfers by wave motion from one place to another. For example , when the prong of the tuning fork vibrate , the waves start moving from one fork to another , the air start getting compressed . The compression is pushed forward. Now, when the fork vibrate in another direction, the air in the immediate neighbor which was compressed, now get rarefied. As a result, a series of compression and rarefactions are produced and sound energy travels in the direction where compression and rarefactions travel.
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संबंधित प्रश्न
Write true or false for a given statement.
The frequency is measured in hertz.
Why are musical instruments provided with more than one string ?
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
Select the correct option:
A part of the longitudinal wave in which particles of the medium are closer than the normal particles is called:
Select the correct option:
A part of longitudinal wave in which particles of the medium are farther away than the normal particles is called :
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Which of the following vibrates when a musical note is produced by the cymbals in a orchestra?
If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating in _____.
A list of mediums is given below.
- wood
- water
- air
- vacuum
In which of these mediums can sound travel?
