What is the Prandtl number for a gas at 27°C and 1 × 105 Pa, with kinematic viscosity equal to 1.8 × 10-5 m2/s, specific heat capacity at constant pressure = 700 J/kg-K and thermal conductivity of 0.02 W/m-K? (Take Gas constant = 300 J/kg-K)
1
0.52
2
0.62
3
0.70
4
0.78