Advertisements
Advertisements
प्रश्न
Tick the most appropriate answer.
The SI unit of mass is
विकल्प
gram
milligram
kilogram
pound
Advertisements
उत्तर
kilogram
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
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 |
Define mass.
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 ...........
Solve the following numerical problem.
The masses of five marbles are 50 g, 55 g, 60 g, 65 g, and 70 g. Find their average mass.
Name the device commonly used to measure mass.
Numerical Problem.
Find the mass of an object weighing 98 N
Write a short note on the following:
Common (beam) balance:
Which of the following represents a unified atomic mass unit (1u)?
