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प्रश्न
Make a match
| A group | B group |
| 1. Fluid | a. Higher pressure |
| 2. Blunt knife | b. Atmospheric pressure |
| 3. sharp needle | c. Specific gravity |
| 4. Relative density | d. Lower pressure |
| 5. Hecto pascal | e. Same pressure in all directions |
उत्तर
| A group | Answers |
| 1. Fluid | e. Same pressure in all directions |
| 2. Blunt knife | d. Lower pressure |
| 3. sharp needle | a. Higher pressure |
| 4. Relative density | c. Specific gravity |
| 5. Hecto pascal | b. Atmospheric pressure |
संबंधित प्रश्न
A spring is compressed against a rigid wall. Draw a neat and labeled diagram showing the forces acting on the spring.
Give one example in each of the following cases where a force:
(i) Stops a moving body.
(ii) Moves a stationary body.
(iii) Changes the size of a body.
(iv) Changes the shape of a body.
Is force needed to keep a moving body in motion?
A car initially at rest, picks up a velocity of 72 kmh−1 in 20 seconds. If the mass of the car is 1000 kg, find
- Force developed by its engine
- Distance covered by the car.
A car of mass 1000 kg develops a force of 500 N over a distance of 49 m. If initially, the car is at rest find
- Final velocity
- time for which it accelerates.
Explain the following:
Why do we jerk wet clothes before spreading them on a line?
Explain the following:
Why is it dangerous to jump out of a moving vehicle? How can the danger be minimised?
Multiple Choice Question. Select the correct option.
A man is walking from east to west on a rough surface. The force on the man is directed:
Complete the analogy.
Kicking a ball: Contact force:: Falling of leaf: ______?
A gas filled balloon moves up. Is the upward force acting on it larger or smaller than the force of gravity?
