Chapter 12: Class 8 Science Exam Tests
Class 8 Science MCQs - Chapter 12
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The Quiz: Sounds which are below 20Hz frequencies are called; "Sound and Hearing" App Download iOS & Android (Free) with answers ultrasound, infrasound, mega sound and micro sound to study online certification courses. Study pitch and loudness quiz questions, download Amazon eBook (Free Sample) for online certificate courses.
MCQ 31: Sounds which are below 20Hz frequencies are called
MCQ 32: A form of energy which is produced by vibrations and can be detected by ears is called
MCQ 33: Loudness is measured by
MCQ 34: Sound travels at speed of 5960m/s in
MCQ 35: The regions where molecules are compressed are called
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