Physics
Which of the following devices can be used to detect radiant heat ?

Thermopile
Constant volume air thermometer
Six's maximum and minimum thermometer
Liquid thermometer

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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
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
All listed here

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