Physics
Sprayer functions on

Bernouli's principle
Archemede's principle
Pascal's law
Floatation principle

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

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

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Physics
What is the direction of torque?

Opposite to the direction of applied force
Parallel to the radius
Same as the direction of applied force
Perpendicular to the direction of applied force

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