Sound and Hearing Multiple Choice Questions and Answers 7 PDF Book Download
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MCQ on Sound and Hearing Worksheets 7 PDF Book Download
MCQ: Sounds which are below 20Hz frequencies are called
- mega sound
- micro sound
MCQ: A form of energy which is produced by vibrations and can be detected by ears is called
- electric current
MCQ: Loudness is measured by
- sound level meter
MCQ: Sound travels at speed of 5960m/s in
MCQ: Regions where molecules are compressed are called