Physics
Which of the following device is best suited for measuring the temperature inside metallurgical furnaces?

Thermocouple
Pyrometer
Thermistor
Thermometer

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Physics
Dynamo is a device for converting

Mechanical energy into electrical energy
Magnetic energy into electrical energy
Chemical energy into electrical energy
Heat energy into electrical energy

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Physics
X-rays region lies between

Ultraviolet and visible region
Gamma-rays and ultraviolet region
Visible and infra-red region
Short radio waves and long radio waves

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