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प्रश्न
Fill in the blank.
The amount of matter contained in a body is known as its ...........
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उत्तर
The amount of matter contained in a body is known as its mass.
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संबंधित प्रश्न
Match the following column:
| Column A | Column B |
| (a) Length of a housing plot | (1) Clock |
| (b) Breadth of a book | (2) Beam balance |
| (c) Mass of an apple | (3) Thermometer |
| (d) Period of time for study | (4) Measuring tape |
| (e) Temperature of a body | (5) Graph paper |
| (f) Surface area of a leaf | (6) Metre ruler |
Answer the following in short.
What do you understand by the term ‘mass’? Name any one instrument used for weighing.
Potatoes:: Kilogram; Water:: ______.
Stop clock:: accurate time: _______:: accurate weight.
Give an example of a device used to find the accurate measurement of weight.
Differentiate mass from weight
Assertion (A): Mass, Length, and Time are fundamental physical quantities.
Reason (R): They are independent of each other.
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)
Express unified atomic mass unit in kg.
What object and material were used to define the kilogram for 130 years before 2019?
