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प्रश्न
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.
विकल्प
Both A and R are true but R is not the correct reason.
Both A and R are true and R is the correct reason.
A is true but R is false.
A is false but R is true.
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उत्तर
Both A and R are true but R is not the correct reason.
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संबंधित प्रश्न
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?
Fill in the blank.
The amount of matter contained in a body is known as its ...........
Complete the analogy.
Milk : Volume :: Vegetables :___?
Mass:: Balance: Length:: ______.
Give an example of a device used to find the accurate measurement of weight.
Mass is ______.
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?
- Mass of electron (me)
- Universal gravitational constant (G)
- Charge of electron (e)
- Mass of proton (mp)
What object and material were used to define the kilogram for 130 years before 2019?
