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Earn 100

The S.I. unit of force is kgf.

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Important Questions on Measurements and Motion

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The angular speed of a fly-wheel making 180 rpm is ________
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If E and H represents the intensity of electric field and magnetizing field respectively, then the unit of EH will be:

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Why do we need standard units of measurement? 
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“Parsec” is the unit of :

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Dimensional formula for the universal gravitational constant G is
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The physical quantity which is not a unit of energy is:
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What is the metric system of units?
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A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the sun and the earth in terms of this new unit, if light takes 8 min and 20 sec to cover this distance?
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What is the SI system of units? Name two other systems of units.
 
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Ampere-hour is the unit of
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The surface tension of mercury is 32 dyne cm-1. Its value in SI  is
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A decimal system of units _____. (Choose from British system, metric system, SI system)
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Which of the following cannot be regarded as an essential characteristic of a unit of measurement?
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It is estimated that per minute each cm2 of earth receives about 2 calorie of heat energy from the sun. This constant is called solar constant S. Express solar constant in SI units.
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The SI and CGS units of energy are joule and erg respectively. Erg and joule are related through
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Which of these is the correct way of writing? 10 kg or 10 kgs.