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The length of one edge of a glass plate of thickness 0.2 cm is 9.8 cm. If this edge of the glass pate touches the surface of a liquid of surface tension 60 dyne/cm, then it is pulled down with a force of (Assume that angle of contact to be zero)
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Correct option is D
The glass plate's length and thickness are affected by surface tension.
Total length at which Surface tension acts is
Hence the correct answer is 1200 dynes.
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