JEE Main Physics question
From a waterfall, water is falling down at the rate of 100 kg/s on the blades of a turbine. If the height of the fall is 100 m, then the power delivered to the turbine is approximately equal to
Answer: (A)
Solution
P = (dm/dt)gh = 100 × 10 × 100 = 10⁵ W = 100 kW.