An open-ended steel barrel of 1 m height and 1 m diameter is filled with saturated fine sand having the coefficient of permeability of 10 - 2 m/sec. The barrel stands on a saturated bed of gravel. The time required for the water level in the barrel to drop by 0.75 m is____

GATE Civil Engineering (CE) 2010 Solved Paper

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An open-ended steel barrel of 1 m height and 1 m diameter is filled with saturated fine sand having the coefficient of permeability of 10^-²m/sec. The barrel stands on a saturated bed of gravel. The time required for the water level in the barrel to drop by 0.75 m is____

58.9 s
75 s
100 s
150 s

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