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प्रश्न
Name any one instrument used for measuring mass.
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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
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):
Write true or false.
Mass is the measure of quantity of matter.
Name the instrument which is commonly used to measure the mass of a body. State how is it used?
Find the odd one out.
Kerosene is measured with the help of the graduated cylinder.
Mass is ______.
The unit is used to measure mass ______.
What is the standard unit of mass?
Write a short note on the following:
Spring balance:
