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प्रश्न
Tick the most appropriate answer.
Which of the following devices is used to measure mass?
विकल्प
Ruler
Measuring cylinder
Beam balance
Stopwatch
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उत्तर
Beam balance
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संबंधित प्रश्न
The unit of length convenient on the nuclear scale is a fermi : 1 f = 10– 15 m. Nuclear sizes obey roughly the following empirical relation : `r = r_0A^(1/3)` where r is the radius of the nucleus, A its mass number, and r0 is a constant equal to about, 1.2 f. Show that the rule implies that nuclear mass density is nearly constant for different nuclei. Estimate the mass density of sodium nucleus. Compare it with the average mass density of a sodium atom obtained in Exercise 2.27
Write true or false.
Mass is the measure of quantity of matter.
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.
Fill in the blank.
The amount of matter contained in a body is known as its ...........
State whether true or false. If false, correct the statement.
A physical balance is more sensitive than a beam balance.
The moon’s gravitational pull is one ______ of the earth’s pull.
On the moon, the gravitational force is greater than on earth.
Differentiate mass from weight
The unit is used to measure mass ______.
