Advertisements
Advertisements
प्रश्न
Which among the following is not a device to measure mass?
विकल्प
Spring balance
Beam balance
Physical balance
Digital balance
Advertisements
उत्तर
Spring balance
APPEARS IN
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
Tick the most appropriate answer.
The SI unit of mass is
Answer the following in short.
What do you understand by the term ‘mass’? Name any one instrument used for weighing.
We can say that mass of an object is 126 kg.
On the moon, the gravitational force is greater than on earth.
Stop clock:: accurate time: _______:: accurate weight.
Mass:: Balance: Length:: ______.
Since 2019, the kilogram has been redefined based on which fundamental physical constant?
Why is carbon-12 chosen as the standard for defining the amu?
Why was the kilogram redefined in 2019, and how is it measured now?
