12.6×10⁻⁶ m³/s
2.23×10⁻⁶ m³/s
6.4×10⁻⁶ m³/s
8.9×10⁻⁶ m³/s
Correct option is A. 12.6×10⁻⁶ m³/s
Rate of flow of liquid Q = av = a√(2gh) = 2×10⁻⁶ m² × √(2 × 10 × 2 m/s) = 2 × √40 × 10⁻⁶ m³/s = 2 × 2√10 × 10⁻⁶ m³/s = 4√10 × 10⁻⁶ m³/s ≈ 12.56 × 10⁻⁶ m³/s ≈ 12.6 × 10⁻⁶ m³/s