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Water does not run out of a dropper unle...

Water does not run out of a dropper unless its rubber bulb is pressed.

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Atmospheric pressures acting from outside the dropper balances the inside water pressure and so the water does not run out of a dropper unless its rubber bulb is pressed
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ICSE-FLUIDS-TOPIC 1 (3 Marks Questions )
  1. We do not feel uneasy even under enormous pressure of the atmosphere a...

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  2. A balloon collapses when air is removed from it. Explain.

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  3. Water does not run out of a dropper unless its rubber bulb is pressed.

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  4. Two holes are made in a sealed tin can to take out oil from it. Explai...

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  5. In a hydraulic machine, the two pistons are of area of cross section i...

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  6. How does the pressure at a certain depth in water differ from that of...

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  7. A human exerts a force of 1.5 N on each of the two nails A and B the a...

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  8. At a given place, a mercury barometer records a pressure of 0.70 m of ...

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  9. Assuming the density of air to be 1.295 "kg m"^(-3), find the fall in ...

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  10. How is the barometric height of a simple barometer affected if Its tu...

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  11. How is the barometric height of a simple barometer affected if Its tu...

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  12. How is the barometric height of a simple barometer affected if A drop...

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  13. Calculate the height of a water column which will exert on its base th...

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  14. Will the height of the water column change if the cross section of th...

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  15. The pressure of water on the ground floor is 40,000 Pa and on the firs...

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  16. Differentiate between thrust and pressure .

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  17. A simple U tube contains mercury to the same level in both of its arms...

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  18. A force of 50 kgf is applied to the smaller piston of a hydraulic mach...

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