Ram used to live in a remote village of Rajasthan which didn’t have electricity. He was a good student and studied very hard to become an engineer in spite of all hardships. While studying, he came to know that solar energy can be converted to electrical energy by using specially designed devices.
He went to his village and discussed it with villagers. He also told them that Govt. also gives subsidy for using solar devices. All the villagers agreed and they contacted the Govt. officials who obliged their request and the village became the model village which used solar energy for electricity.
(ii) If direct solar energy is incident on the horizontal surface at an average rate of 200 watt per square metre and 20% of this energy can be converted to use electrical energy, then how much area is needed to supply 8 KW of electrical energy?

Explanation

To solve the problem, we need to find the area required to supply 8 kW of electrical energy using solar energy that is incident on a horizontal surface at a rate of 200 watts per square meter, with 20% of that energy being converted to electrical energy.

### Step-by-Step Solution:

1. **Identify the total electrical energy required:**
- The villagers need 8 kW of electrical energy.
- Convert this to watts:
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