Physics
An integrated circuit is more advantages than a coventional circuit because

They make the electric equipments more reliable and easier for servicing
A faulty part of a conventional circuit may be difficult to locate and repair
If a part of the integrated circuit fails the entire circuit is simply replaced
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Physics
Which one of the following is not a property of electromagnetic waves?

Electromagnetic waves are transverse waves
Electromagnetic waves do not show interference and diffraction.
Electromagnetic waves do not require a medium to propagate.
Oscillating electric field and magnetic field are perpendicular to each other.

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