Physics
The complete form of 'IC' in electronics is

Integrated circuit
Internal circuit
Inbuilt circuit
Independent circuit

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

If a part of the integrated circuit fails the entire circuit is simply replaced
A faulty part of a conventional circuit may be difficult to locate and repair
They make the electric equipments more reliable and easier for servicing
All listed here

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Physics
In the gamma decay of a nucleus

Both the mass number and the atomic number of the nucleus change
The mass number of the nucleus does not change whereas its atomic number changes
Neither the mass number nor the atomic number of the nucleus changes
The mass number of the nucleus changes whereas its atomic number does not change

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