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When we press the bulb of a dropper with...

When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb , water gets filled in the dropper. The rise of water in the dropper is due to :

A

Pressure of water

B

gravity of the earth

C

shape of rubber bulb

D

atmospheric pressure

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The correct Answer is:
D
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LAKHMIR SINGH & MANJIT KAUR-FORCE AND PRESSURE.-EXERCISE
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  2. Which of the following is not an example of the force of gravity ?

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  3. When we press the bulb of a dropper with its nozzle kept in water, air...

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  4. A rectangular wooden block has length, breadth and height of 50 cm, 25...

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  5. Which of the following are contact forces ? A. Friction B. Gravitat...

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  6. If we release a magnet held in our hand, it falls to the ground. The f...

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  7. Which of the following force is utillised in reducing air pollution by...

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  8. The same force F acts on four different objects having the areas given...

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  9. Which of the following represent correct values for the normal atmosph...

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  10. Which of the following does not work on the existence of atmospheric p...

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  11. The magnitude of force is expressed in the unit of force called:

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  12. Which of the following change appreciably when a batsman hits a moving...

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  13. Which of the following is not an effect of force ?

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  14. Which of the following is not a non - contact force ?

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  15. Which of the following scientists gave the idea of the existance of gr...

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  16. Some mustard oil is kept in a beaker. It will exert pressure :

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  17. A pressure of 10 kPa acts on an area of 0.3 m^(2). The force acting on...

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  18. The magnitude of atmospheric pressure is equal to the pressure exerted...

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  19. The atmospheric pressure is usually measured in the unit of :

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  20. When a force of 5 N acts on a surface, it produces a pressure of 500 P...

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