Physics
Grade-8
Easy
Question
Sound which has less frequency are called as ________ sounds
- Infra
- Ultra
- Audible
- None
Hint:
Infrasound.
The correct answer is: Infra
- Sounds with frequencies between 20Hz to 20kHz are called audible range sounds.
- Sounds which have frequencies less than 20Hz are called infrasounds.
- So, the correct option is a.
Sounds which have frequencies more than 20kHz are called ultrasounds.
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