Question

The hydraulic brakes used in automobiles are based on:

• A. Newton's second law of motion.
• B. Law of floatation
• C. Pascal's law
• D. Law of gravitation

Answer 1

The correct option is C

Pascal's law

Explanation for the correct option

1. Pascal's law states that pressure or intensity of pressure at a point in a static fluid is equal in all directions.
2. Pressure applied to a fluid travels uniformly in all directions.
3. Pressure applied to the fluid used in a hydraulic brake gets transferred to the braking mechanism and the brakes work.
4. Hydraulic brakes used in automobiles work on the principle of Pascal's law.

Hence, option (c) will be correct.