Physics
To resolve an object in an electron microscope,

The wavelength of the electrons must be greater than the diameter of the object.
Both A & B
The wavelength of the electrons must be close to the diameter of the object
None of these

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Physics
The law of conservation of energy states that

Energy can neither be created or destroyed
Energy can either be created or destroyed
Energy can either be created nor destroyed
Energy can neither be created nor destroyed

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