Physics
Acceleration is

Directly proportional to force
Inversely proportional to force
Directly proportional to mass
Inversely proportional to mass

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

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