Hydraulic press multiplies force based on: MCQ with Answer and Explanation

Hydraulic press multiplies force based on:
A. Bernoulli's theorem
B. Continuity equation
C. Pascal's law
D. Archimedes' principle
Answer: Option C
Solution (By JKExamLibrary)
Pascal's law: pressure applied to confined fluid transmits equally. Force multiplication: F₂/F₁ = A₂/A₁. Small force on small area creates large force on large area. Memory aid: 'Pascal = pressure transmission; hydraulic advantage = area ratio'. Application question testing fluid mechanics principles, common in competitive exams linking theory to devices.

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Practice More Physics Questions

Question #1
Wave speed v = 300 m/s, frequency f = 150 Hz. Wavelength λ is:
A. 45000 m
B. 0.5 m
C. 2 m
D. 150 m

Correct Answer: Option C


Explanation:
v = fλ ⇒ λ = v/f = 300/150 = 2 m. Universal wave equation application. Memory tip: 'λ = v/f; units: m/s ÷ Hz = m'. Basic wave property calculation frequently tested in competitive exams to verify formula application.

This question belongs to: Science Physics
Question #2
The instrument that measures the density of a liquid is
A. Hygrometer
B. Barometer
C. Lactometer
D. Hydrometer

Correct Answer: Option D


Explanation:
Hydrometer measures relative density. Lactometer for milk, but general is hydrometer.

This question belongs to: Science Physics
Question #3
A wave has speed 300 m/s and frequency 150 Hz. Wavelength is
A. 2 m
B. 0.5 m
C. 45000 m
D. 300 m

Correct Answer: Option A


Explanation:
λ = v/f = 300/150 = 2 m.

This question belongs to: Science Physics