Physics
What principle/law explains the working of the hydraulic brakes in automobiles ?

Archimedes' principle
Pascal's law
Bernoulli's law
Posieulle's principle

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

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

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