Physics
Hydraulic brakes in automobile work on

Pascal's principle
Archimedes' principle
Bernoulli's principle
Poiseuille's principle

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Physics
An electron microscope gives higher magnification than an optical microscope, because :

The electrons have more energy than the light particles
It uses more powerful lenses
The wavelength of electrons is smaller as compared to the wavelength of visible light
The velocity of electron is smaller than that of visible light

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