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When a constant discharge 2.91 litres/sec. was obtained in a pumping test, the draw downs in the test wells at 3 m and 6.184 m were 2.6 m and 0.3 m respectively. If over-all depth of the pumping well was 16 m, the permeability of the soil, is

0.0005 cm/sec
0.001 cm/sec
0.002 cm/sec
0.01 cm/sec.

Correct Answer: 0.001 cm/sec

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