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प्रश्न
Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?
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उत्तर
Yes, first you have to wound the wire around the scale for 10 cm and count the number of turns in it. Then if you divide 10 cm by number of turns which gives the thickness of the wire.
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संबंधित प्रश्न
Fill in the blank.
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