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CBSE Notes 2011-2012 » IX-Science-Term2

Sound

Sounds having frequency more than 20 Hz are called

Multiple choice question

Sounds having frequency more than 20 Hz are called

Hertz is the unit of

Multiple choice question

Hertz is the unit of

Loudness of sound is expressed in

Multiple choice question

Loudness of sound is expressed in

The frequency of a given sound is 1.5 kHz. The vibrating body is

Multiple choice question

The frequency of a given sound is 1.5 kHz. The vibrating body is

A given sound is inaudible to the human ear if

Multiple choice question

A given sound is inaudible to the human ear if

Sound can propagate

Multiple choice question

Sound can propagate

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