MCQ
A thin ring of diameter $8 \mathrm{~cm}$ is pulled out of water (surface tension $0.07 \mathrm{~N} / \mathrm{m}$ ). The force required to break free the ring from water is
  • A
    $0.0088 \mathrm{~N}$
  • B
    $0.0176 \mathrm{~N}$
  • $0.0352 \mathrm{~N}$
  • D
    $3.52 \mathrm{~N}$.

Answer

Correct option: C.
$0.0352 \mathrm{~N}$
$0.0352 \mathrm{~N}$

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