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A beaker of height 30 cm is partially filled with a liquid and is rotated by an angle θ as shown.
At this point, the pressure at point B is found to be 5 bar. By what angle should θ be increased such that the pressure at B gets halved?
  • a)
    12o
  • b)
    15o
  • c)
    17o
  • d)
    20o
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A beaker of height 30 cm is partially filled with a liquid and is rota...
Explanation: Let θ1 and θ2 be the angles at which the beaker is inclided for the two cases mentioned.
103 * 9.81 * 0.15 * cos θ1 = 5 * 100; θ1 = 70.12o
103 * 9.81 * 0.3 * cos θ2 = 12 * 5 * 100; θ1 = 85.12o
θ2 – θ1 = 15o
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A beaker of height 30 cm is partially filled with a liquid and is rotated by an angle θ as shown.At this point, the pressure at point B is found to be 5 bar. By what angle should θ be increased such that the pressure at B gets halved?a)12ob)15oc)17od)20oCorrect answer is option 'B'. Can you explain this answer?
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