Propagation of sound can be visualised as propagation of ____________ variations in the medium
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An anemometer measures which of the following ?
Which one among the following components can not be developed within an "integrated circuit"?
What is the unit of relative density?
Optical fibre works on which of the following principle of light?
Which glass is used to make spectacles?
The greater the difference in _____________, the faster the air moves.
A sound of single frequency is called a
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