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 nature of fuse wire is

Low resistance and high melting point.
Low resistance and low melting point.
High resistance and low melting point.
High resistance and high melting point.

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