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qUESTIONS

In a capillary tube of area of cross-section ‘a’ water rises to height ‘h’. In a capillary tube of area of cross-section ‘4a’ water will rise upto height:

A steel coin of thickness ‘d’ and density ‘p’ is floating on water of surface tension ‘7″. The radius of the coin (R) is: [ g =acceleration due to gravity.]

The work done in blowing a soap bubble of radius R is Wat room temperature. Now the soap solution is heated. From the heated solution another soap bubble of radius 2R is blown and the work done is ‘W2’ Then:

1 2 3 4

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