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The order of the magnitude of speed of light in SI unit is

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Important Questions on Units and Measurements

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The most precise reading of the mass of an object, among the following is
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The most accurate reading of the length of a 6.28 cm long fibre is
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Which of the following is the most precise measurement ?
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The values of a number of quantities are used in a mathematical formula and are having same power. The quantity that should be most precise and accurate in measurement is the one
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Thickness of a pencil measured by using a screw gauge (least count .001 cm ) comes out to be 0.802 cm. The percentage error in the measurement is
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The percentage error in the measurement of the voltage V is 3% and in the measurement of the current is 2%. The percentage error in the measurement of the resistance is
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The relative error in the measurement of the side of a cube is 0.027. The relative error in the measurement of its volume is
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Zero error of an instrument introduces