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Question

The following data were obtained when a sample of medium sand was tested in a constant head permeameter:
Cross-section area of sample : 100 cm2
Hydraulic gradient : 10
Discharge collected : 10 cc/s
The coefficient of permeability of the sand is

A
0.1 m/s
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B
0.01 m/s
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C
1 × 104 m/s
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D
1 × 108 m/s
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Solution

The correct option is C 1 × 104 m/s
k=QiA=10100×10×102

=1×104m/s

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