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Question
Tick the most appropriate answer.
The SI unit of mass is
Options
gram
milligram
kilogram
pound
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Solution
kilogram
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RELATED QUESTIONS
Just as precise measurements are necessary in science, it is equally important to be able to make rough estimates of quantities using rudimentary ideas and common observations. Think of ways by which you can estimate the following (where an estimate is difficult to obtain, try to get an upper bound on the quantity):
Define one kilogram, the S.I. unit of mass.
Tick the most appropriate answer.
Which of the following devices is used to measure mass?
Find the odd one out.
1 kg of rice is weighed by ______.
Assertion(A): The scientifically correct expression is “ The mass of the bag is 10 kg”
Reason (R): In everyday life, we use the term weight instead of mass.
Amount of matter:: mass: Gravitational Pull:: ______.
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If Planck’s constant (h) and speed of light in vacuum (c) are taken as two fundamental quantities, which one of the following can, in addition, be taken to express length, mass and time in terms of the three chosen fundamental quantities?
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- Universal gravitational constant (G)
- Charge of electron (e)
- Mass of proton (mp)
Why was the kilogram redefined in 2019, and how is it measured now?
