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The length of a cylinder is first measured with a scale and is found to be 7.8 cm. Next it is measured with vernier calipers and is found to be 7.78 cm. Next it is measured with a jumbo sized screw-gauge and is found to be 7.804 cm. Which one of the three measurements is more precise? The measurement taken with

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all have same precision

scale

vernier callipers

screw-gauge

answer is C.

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Detailed Solution

The more the significant digits in the measurement, the more the precision

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