Physics
Point A is at a lower electrical potential than point B. An electron between them on the line joining them will

Remain at rest
Move at right angles to the line joining A and B
Move towards B
Move towards A

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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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