Physics
Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water

Increases to a great extent
Decreases slightly
Increases slightly
Decreases rapidly

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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 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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