EASY
8th CBSE
IMPORTANT
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Sound is produced when objects vibrate.

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Important Questions on Sound

MEDIUM
8th CBSE
IMPORTANT
Full Marks Science>Chapter 13 - Sound>TEST ASSIGNMENT NO. 2>Q 8
The unit of frequency is hertz.
MEDIUM
8th CBSE
IMPORTANT
Full Marks Science>Chapter 13 - Sound>TEST ASSIGNMENT NO. 2>Q 9
Write the applications of ultrasound in our life.