What will be the change in the rate of radioactivity if the temperature of the radioactive substance is raised to four times the initial temperature?

Explanation

To solve the question regarding the change in the rate of radioactivity when the temperature of a radioactive substance is raised to four times the initial temperature, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Radioactivity**:
- Radioactivity is a process by which unstable atomic nuclei lose energy by emitting radiation. The rate of radioactivity is measured in terms of the number of decays per unit time.

2. **Identify Factors Affecting Radioactivity**:
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