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प्रश्न
Explain giving examples.
Scalar quantity
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उत्तर
A quantity that has only magnitude and no direction is known as a scalar quantity. Distance, mass, work, speed, time, energy, etc. are all scalar quantities. These quantities can be expressed completely by their magnitude alone.
संबंधित प्रश्न
Match the following:
| Column A | Column B |
| 1.Volume of a liquid | 1. kg `m^-3` |
| 2. Area of a leaf | 2. `m^3` |
| 3. S.I. unit of volume | 3. graph paper |
| 4. S.I. unit of density | 4. m `s^-1` |
| 5. S.I.unit of speed | 5. measuring cylinder |
How does the density of water changes when it is heated from 4°C to 10°C ?
A solid silver piece is immersed in water contained in a measuring cylinder. The level of water rises from 50 ml to 62 ml. Find the volume of silver piece.
A block of iron has dimensions 2 m × 0.5 m × 0.25 m. The density of iron is 7.8 g cm−3. Find the mass of block.
Answer the following in short.
What are derived physical quantities? Give any two examples of derived physical quantities.
Solve the following numerical problem.
Express 2.25mincm?
Name some of the derived quantities.
Define mass Mention its unit.
What do you mean by ‘unit’?
Match List I with List II.
| List I | List II | ||
| A. | Torque | I. | Nms-1 |
| B. | Stress | II. | J kg-1 |
|
C. |
Latent Heat | III. | Nm |
|
D. |
Power | IV | Nm-2 |
Choose the correct answer from the options given below:
