MCQOPTIONS
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MCQOPTIONS
| 1. |
An object vibrated with a frequency of 15 Hz. Which of the following is true? |
| A. | It produces sound which we can hear. |
| B. | It does not produce sound. |
| C. | It produces sound which we cannot hear. |
| D. | It produces sound which we can hear if we strain our ears. |
| Answer» D. It produces sound which we can hear if we strain our ears. | |