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Air is pushed into a soap bubble of radi...

Air is pushed into a soap bubble of radius r to double its radius, of the surface tension of the soap solution is S, the work done in process is

A

`8pir^2S`

B

`12pir^2S`

C

`16pir^2S`

D

`24pir^2S`

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HC VERMA-SOME MECHANICAL PROPERTIES OF MATTER-Objective-1
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  5. The dimensions ML^-1T^-2 may correspond to

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  6. Air is pushed into a soap bubble of radius r to double its radius, of ...

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  7. If more air is pushed in a soap bubble, the pressure in it will

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  8. If two soap bubbles of different radii are connected by a tube, then

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  9. Figure shows a capillary tube of radius r dipped into water. If the a...

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  11. Which of the following graphs may represent the relation between the c...

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  13. A 20 cm long capillary tube is dipped in water. The water rises up to ...

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  17. A raindrop falls near the surface of the earth with almost uniform vel...

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  18. A piece of wood is taken deep inside a long column of water & released...

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  19. A solid sphere falls with a terminal velocity of 20 ms^-1 in air. If i...

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