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प्रश्न
Answer the following in short.
Explain the working of an extension spring balance.
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उत्तर
When a body to be weighed is attached to the hook, the coil is stretched downwards. The distance through which the spring gets stretched is measured by a pointer and a graduated scale attached to the spring. The reading on the scale gives the weight of the object.
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संबंधित प्रश्न
Fill in the blank
1 g cm-3 = _______ kg m-3.
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 |
Find the volume of a liquid present in a dish of dimensions 10 cm x 10 cm x 5 cm.
Convert the following quantity as indicated:
5 mg = ………. kg
Write the temperature of boiling water.
Answer the following in short.
What are the characteristics of a standard unit?
Answer the following in detail.
Which is the most suitable unit for measuring the volume of the swimming pool?
Solve the following numerical problem.
A piece of wire is wound around a pencil 60 times. If the total width of all the turns is 4 cm, find the diameter of the wire.
Solve the following numerical problem.
The body temperature of a patient on Monday was102 °F and on Tuesday it was 104°F. What was the rise in temperature during these two days?
Assertion (A): Density is a derived physical quantity
Reason (R): Density cannot be derived from the fundamental physical quantities.
