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A thread is tied slightly loose to a wir...


A thread is tied slightly loose to a wire frame as in figure and the frame is dipped into a soap solution and taken out . The frame is comletely covered with the film. When the portion `A` puntured with a pin The thread.

A

Becomes concave toward A

B

Becomes convex towards A

C

Remains in the initial position

D

Either (a) or (b) depending on the size of A w.r.t. B

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The correct Answer is:
A
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ERRORLESS -SURFACE TENSION-Exercise
  1. The dimensions of surface tension are

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  2. A wooden stick 2m long is floating on the surface of water. The surfac...

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  3. A thread is tied slightly loose to a wire frame as in figure and the f...

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  4. The force required to take away a flat circular plate of radius 2 cm f...

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  5. Surface tension may be defined as

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  6. Energy needed in breaking a drop of radius R into n drops of radii r i...

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  7. The potential energy of molecule on the surface of a liquid as compare...

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  8. Two water droplets merge with each other to from a larger droplet. In ...

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  9. A drop of liquid of diameter 2.8 mm breaks up into 125 identical drops...

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  10. Radius of a soap bubble is 'r ', surface tension of soap solution is T...

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  11. The work done in splitting a drop of water of 1 mm radius into 10^(6) ...

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  12. A spherical liquid drop of radius R is divided into eight equal drople...

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  13. The amount of work done in blowing a soap bubble such that its diamete...

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  14. If T is the surface tension of soap solution, the amount of work done ...

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  15. The radius of a soap bubble is increased from (1)/(sqrtpi) cm to (2)/(...

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  16. The surface tension of a liquid is 5Nm^-1. If a thin film formed on a ...

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  17. If work W is done in blowing a bubble of radius R from a soap solution...

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  18. A spherical drop of oil of radius 1 cm is broken into 1000 droplets of...

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  19. The work done in blowing a soap bubble of radius r of the solution of ...

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  20. If two identical mercury drops are combined to form a single drop, the...

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