Download App

Gravitation — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceGravitation2 Marks
Question
Define density. What is the $SI$ unit of density?
✓

Answer

The density of a substance is defined as mass of the substance per unit volume.
Density of substance $=\frac{\text{Mass of substance}}{\text{Volume of substance}}$
$SI$ unit of density is $\ kg/m^3.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 2 Mark )" from Gravitation→Gravitation — all question types→Science STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

A cricket ball is seen to hit the bat first and the sound of hitting is heard a little later. Why?
→
Relative density of silver is $10.8$. What is the density of silver in $\text{Sl}$ unit?
→
Answer the following:
At any instant a compression is formed at a point. After how much time:
  1. A rarefaction
  2. A compression will be formed at the same point?
→
Salt can be recovered from its solution by evaporation. Suggest some other technique for the same?
→
Calculate : The mass of $1.0505 \times 10^{23}$ molecules of carbon dioxide $(CO_2),$
→
You find your mass to be 42kg on a weighing machine. Is your mass more or less than 42kg?
→
Discuss the implications of the following statement:
“It is interesting to note that poultry is India’s most efficient converter of low fibre food stuff (which is unfit for human consumption) into highly nutritious animal protein food.”
→
State two observations which show that atom is not indivisible.
→
What is the nature of sound waves?
→
What are the differences between broilers and layers and in their management?
→