EASY
9th Tamil Nadu Board
IMPORTANT
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Sound is a   (longitudinal/ transverse) wave and needs a material medium to travel.

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Important Questions on Sound

EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q ii
The number of vibrations produced in one second is _____.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q ii

The velocity of sound in solid is _____ (higher/lesser) than the velocity of sound in air.

EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q ii
Vibration of object produces _____.
MEDIUM
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q ii

Loudness is proportional to the square of the _____.

EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q ii
_____ is a medical instrument used for listening to sounds produced in the body.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q ii
The repeated reflection that result in to persistence of sound is called _____.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q iv
Through which medium sound travels faster iron or water? Give Reason.
EASY
9th Tamil Nadu Board
IMPORTANT
Science Standard 9>Chapter 8 - Sound>textbook exercises>Q iv
Name the physical quantity whose SI unit is hertz. Define