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You are given a thread and a metre scale...

You are given a thread and a metre scale. How will you estimate the diameter of the thread?

Text Solution

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The diameter of a thread is so small. Therefore we cannot measure it using metre scale. We wind a number of turns of the thread on the metre scale so that the turns are closely touching one another.
Measure the length (I) of the windings on the scale which contains number of turns.
`therefore ` Diameter of thread `=(l)/(n)`
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