Multiple choice

Hydraulic brakes used in automobiles are based on

  1. Archimedes principle

  2. Pascal's law

  3. Newton's third law

  4. Law of conservation of energy
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B Correct answer
Explanation

Hydraulic brakes operate on Pascal's law, which states that pressure applied to a confined fluid is transmitted equally in all directions. When you press the brake pedal, pressure is transmitted through the brake fluid to the wheels, multiplying the force. Archimedes principle relates to buoyancy, Newton's third law to action-reaction pairs, and energy conservation is unrelated.

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