Water falling from a `50m` high fall is to be used for generating electric power. If `1.8xx10^(5)kg` of water falls per hour and half the gravitational potential energy can be converted into electric energy, how many 100 watt lamps can be lit ?

Explanation

To solve the problem step by step, we will follow the given information and apply the relevant formulas.

### Step 1: Calculate the gravitational potential energy (GPE)
The formula for gravitational potential energy is given by:
\[ \text{GPE} = m \times g \times h \]
Where:
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