In a hydroelectric power plant more electricalpower can be generated if water falls from agreater height because(1) its temperature increases(2) larger amount of potential energy isconverted into kinetic energy(3) the electricity content of water increaseswith height(4) more water molecules dissociate into ions

To answer the question, we need to understand the factors that contribute to generating more electrical power in a hydroelectric power plant when water falls from a greater height.

1. Temperature Increase: The temperature of the water does not directly affect the generation of electrical power in a hydroelectric power plant. Therefore, option (1) can be ruled out.

2. Conversion of Potential Energy: When water falls from a greater height, it possesses a larger amount of potential energy. This potential energy is converted into kinetic energy as the water flows through the turbines of the power plant. The kinetic energy is then used to generate electrical power. Therefore, option (2) is correct.

3. Electricity Content of Water: The electricity content of water does not increase with height. The generation of electrical power in a hydroelectric power plant is based on the conversion of kinetic energy, not the electricity content of the water. Hence, option (3) is incorrect.

4. Dissociation of Water Molecules: The dissociation of water molecules into ions does not directly contribute to the generation of electrical power in a hydroelectric power plant. Therefore, option (4) can be ruled out.

In conclusion, the correct answer is option (2): a larger amount of potential energy is converted into kinetic energy when water falls from a greater height, resulting in the generation of more electrical power in a hydroelectric power plant.