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Multiple choice

A cylinder is rotating about vertical axis, Radius of cylinder is $5cm$. If it is rotating with an angular velocity of $2$ revolution per second, then the height difference between minimum and maximum height of water is : $(g=10m/s^2)$

  1. $1.8cm$
  2. $2cm$
  3. $1.2cm$
  4. $0.8cm$
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