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प्रश्न
Water in a lake exerts pressure only at its bottom.
पर्याय
True
False
MCQ
चूक किंवा बरोबर
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उत्तर
False
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संबंधित प्रश्न
Toricelli’s barometer used mercury. Pascal duplicated it using French wine of density 984 kg m–3. Determine the height of the wine column for normal atmospheric pressure.
A normal force of 200 N acts on an area of 0.02 m2. Find the pressure in pascal.
How much thrust will be required to exert a pressure of 20,000 Pa on an area of 1 cm2.
Match the following.
| 1. | Density | hρg |
| 2. | 1 gwt | Milk |
| 3. | Pascal’s law | `"Mass"/" Volume"` |
| 4. | Pressure exerted by a fluid | Pressure |
| 5. | Lactometer | 980 dyne |
What is thrust?
Why dams are made stronger and thicker at the bottom than at the top?
Determine the pressure when a force of 200 N acts on the area
- 20 m2
- 8 m2
Give reasons why:
cutting edges of knives and axes are sharpened.
Hot air is ______ dense than ordinary air.
Pressure is a scalar quantity because ______.
- it is the ratio of force to area and both force and area are vectors.
- it is the ratio of the magnitude of the force to area.
- it is the ratio of the component of the force normal to the area.
- it does not depend on the size of the area chosen.
