The force required to take away a flat circular plate of radius $2 \ cm$ from the surface of water is $[$ Surface tension of water $= 70 \times 10^{-3} \ Nm^{-1}, \pi = \frac{22}{7} ]$

  • A
    $4.4 \times 10^{-4} \ N$
  • B
    $8.8 \times 10^{-3} \ N$
  • C
    $6.6 \times 10^{-4} \ N$
  • D
    $11 \times 10^{-3} \ N$

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