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

Thermocouple
Thermometer
Pyrometer
Thermistor

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Physics
A standing wave occurs when

The speed of the wave is zero or near zero
A wave reflects upon itself
The amplitude of a wave exceeds its wavelength
Two waves overlap

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Physics
It is easier to roll a stone up a sloping road than to lift it vertical upwards because

Work done in rolling is more than in lifting.
Work done in both is same but the rate of doing work is less in rolling.
Work done in rolling a stone is less than in lifting it.
Work done in lifting the stone is equal to rolling it.

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Physics
Analog synthesis refers to a technology based on

Interfacing synthesizer equipment.
Representing physical quantities as numbers.
Representing data in terms of measurable physical quantities.
Placing brief digital recordings of live sounds under the control of a synthesizer keyboard.

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