Physics
Grade-8
Easy
Question
The frequency of vibration of an object is 15000 Hz. A person ____ hear it.
- Cannot
- Can
- Sometimes can
- Always can
Hint:
Audible range is between 20Hz-20kHz.
The correct answer is: Can
- Audible frequency for an average human ear lies between 20Hz to 20kHz.
- Therefore, a person can hear the frequency of 15000Hz.
- So, the correct option is b.
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