A soil has the coefficient of permeability of 5 × 10-2 mm/sec at 32°C. Determine its value at 28°C. Take the coefficient of viscosity at 32°C and 28°C as 6.8 milli poise and 8.5 milli poise, respectively.
1
6.25 × 10-2 mm/sec
2
1.7 × 10-2 mm/sec
3
4.0 × 10-2 mm/sec
4
4.5 × 10-2 mm/sec