alleryStart learning →Hydraulic brakes and lifts work on
APascal's law of pressure transmission
BOhm's law of electric circuits
CNewton's first law of motion
DBernoulli's principle for fluids
Answer & Solution
Correct answer: A. Pascal's law of pressure transmission
1. Hydraulic systems use an enclosed fluid in a pipe.
2. A small force on a small piston is multiplied at a large piston.
3. This works because pressure is transmitted equally (Pascal's law).
4. So option A is correct.
_Source: Selina Concise Physics Class 9, Ch 4 Pressure in Fluids and Atmospheric Pressure (Mistral OCR'd PDF), section on Pascal's law applications_
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