Which of the following statements are ture/ false ? (i) Keplar discovered famous theory of relativity. (ii) Nuclear reactors are based on controlled nuclear chain reaction. (iii) Einstein explained photoemission on the basis of Planck's quantum theory.

Explanation

To determine the truthfulness of the statements provided, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement (i): Kepler discovered the famous theory of relativity.**
- **Analysis:** The theory of relativity was not discovered by Johannes Kepler. Instead, it was formulated by Albert Einstein in the early 20th century. Kepler is known for his laws of planetary motion, which describe the orbits of planets around the sun.
- **Conclusion:** This statement is **False**.

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