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प्रश्न
Define mass.
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उत्तर
Mass is the measure of the amount of matter in an object. It is a fundamental property of matter and does not change with location or the object’s state.
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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):
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 |
Name the instrument which is commonly used to measure the mass of a body. State how is it used?
Find the odd one out.
State whether true or false. If false, correct the statement.
In everyday life, we use the term weight instead of mass.
______ is used to measure mass.
On the moon, the gravitational force is greater than on earth.
Write a short note on the following:
Physical balance
Express unified atomic mass unit in kg.
Since 2019, the kilogram has been redefined based on which fundamental physical constant?
