Which of the following statements is correct?

Options

A. Aeroplane is based on Newton's laws of motion and steam engine on Bernoulli's therorem.
B. Hydroelectric power is based on law of thermodynamics and rocket propulsiom on Bernoulli's theorem.
C. Computers are based on digital logic of electronic circuits, while electric generator on Faraday's laws of electromagnetic induction.
D. Nuclear reactor is based on law of thermodynamics and sonar on optical interference.

Explanation

To solve the question of which statement is correct, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A**: "Aeroplane is based on Newton's law of motion and steam engine is based on Bernoulli's theorem."
- **Analysis**: The aeroplane's lift is primarily explained by Bernoulli's theorem, not Newton's laws. Therefore, this statement is incorrect.

2. **Statement B**: "Hydroelectric power is based on law of thermodynamics."
- **Analysis**: Hydroelectric power generation relies on converting the potential energy of water into electrical energy, which is not directly based on the laws of thermodynamics. Thus, this statement is also incorrect.

3. **Statement C**: "Computers are based on digital logic of electronic circuits."
- **Analysis**: This statement is true. Computers operate on digital logic circuits, which process binary data. Therefore, this statement is correct.

4. **Statement D**: "Nuclear reactor is based on law of thermodynamics and sonar is based on optical interference."
- **Analysis**: Nuclear reactors operate based on nuclear fission, not directly on thermodynamics. Additionally, sonar operates on sound waves, not optical interference. Hence, this statement is incorrect.

### Conclusion:
After analyzing all the statements, we conclude that **Statement C** is the only correct statement.

### Final Answer:
**Statement C is correct.**

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