Physics
Grade-8
Easy
Question
The frequency of a sound wave whose time period is 0.02s is ___ Hz.
- 50
- 40
- 30
- 20
Hint:
The frequency of a sound wave whose time period is 0.02s is 50 Hz.
The correct answer is: 50
- The frequency of a sound wave with a particular time period can be calculated by dividing 1 by the time period.
- Frequency = 1/ time period
- Frequency= 1/0.02s which is equal to 50 Hz.
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