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Statement I: Smaller drops of liquid res...

Statement I: Smaller drops of liquid resist deforming forces better than the larger drops.
Statement II: Excess pressure inside a drop is directly proportional to its surface area.

A

Statement-1, is true, Statement-2 is true, Statement-2 is correct explanation for statement-1

B

Statement-1 is true, statement-2 is true, statement-2 is NOT a correct explantion for statement-1

C

statement-1 is true, statement-2 is false

D

statement-1 is false statement-2 is true

Text Solution

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The correct Answer is:
C
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These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: Smaller drops of liquid resist deforming forces better than the larger drops. Reason: Excess pressure inside a drop is directly proportional to its surface area.

Assertion: A tiny drops of liquid resist deforming forces better than bigger drops Reason:Excess pressure inside a drop is directly proportional to the Surface tension.

Derive an expression for excess pressure inside a drop of liquid.

Small droplets of liquid are usually more spherical in shape than larger drops of the same liquid because

Small droplets of a liquid are usually more spherical in shape than larger drops of the same liquid because

Statement-1: Two identical conincal pipes shown in figure have a drop of water. The water drop tens to move towards tapered end. Statement-2: Excess pressure is directed towards centre of curvature and inversely proportional to radius of curvature. Net excess pressure is therefore, directed towards tapered end. So the water drop tends to move towards tapered end.

Statement I: Droplets of liquid are usually more spherical in shape than large drops of the same liquid. Statement II: Force of surface tension predominates force of gravity in case of small drops.

ALLEN-ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 3 (Assertion & Reason)
  1. Statement-1: In gravity free space, the liqid in a capillary tube will...

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  2. Statement-1: It is better to wash the clothes in cold soap solution. ...

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  3. Statement-1: A gas filled balloon stops rising after it has attained a...

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  4. Statement-1: A parachute descends slowly whereas a stone dropped from ...

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  5. Statement-1: hot soup tastes better than the cold soup. Statement-2:...

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  6. Statement-1: Roofs of buildings are blown off during a strong storm. ...

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  7. Statement-1: The stream of water emerging from a wate tap "necks down"...

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  8. Statement-1: As wind flows left to right and a ball is spined as shown...

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  9. Statement-1: A block is immersed in a liquid inside a beaker which is ...

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  10. Statement-1: An ice cube is floating in water in a vessel at 0^(@)C wh...

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  11. Statement-1: Leaves and small insects float on the surface of water bu...

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  12. Statement-1: Weight of a empty balloon measured in air is w(1). If air...

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  13. Statement-1: The stretching of a coil is determined by its shear modul...

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  14. Assertion : At critical temperature, surface tension of liquids become...

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  15. Statement -1 : A large soap bubble expands while a small bubble shrink...

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  16. Statement-1: The size of a hydrogen increases as it rises in air. St...

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  17. Statement I: Smaller drops of liquid resist deforming forces better th...

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  18. Assertion : Specific gravity of a fluid is a dimensionless quantity. ...

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  19. Statement-1: For reynold number R(e)gt2000 the flow of fluid is turbul...

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  20. Statement-1: A thin stainless steel needle can lay floating on a still...

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