Physics
To resolve an object in an electron microscope,

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

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Physics
A Fuse wire is characterised by

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

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