Explain how an electroscope can be used to detect the nature of charges present in a body.

Explanation

To explain how an electroscope can be used to detect the nature of charges present in a body, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Electroscope**: An electroscope is a simple device used to detect electric charge. It consists of a metal rod connected to two thin gold leaves (or foils) that hang down inside a glass container.

2. **Charging the Electroscope**: Before detecting the charge of an unknown body, we need to charge the electroscope with a known charge. For this explanation, let’s assume we charge the electroscope positively.

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