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प्रश्न
Define the term frequency.
उत्तर
Frequency: It is denoted by letter (ƒ). The number of complete vibrations executed by a vibrating particle of a medium about its mean position in one second is called its frequency.
OR
It may be defined as the number of waves passing through one particular point in one second.
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संबंधित प्रश्न
Give scientific reasons:
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Pitch of sound is determined by its
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Match the following:
| 1. | Wave | a. | Unwanted sound |
| 2. | Sound | b. | Successive reflections |
| 3. | Noise | c. | Movement of disturbance |
| 4. | Thunder | d. | Mechanical wave |
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