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a) Here temperature difference of junction is used to produce thermo e.m.f. and vice-versa.
b) This effect produced when junctions of a thermocouple are kept at dissimilar temperatures.
c) It is a reversible effect.
d) This effect depends upon nature of materials used to form junctions and temperature of junctions.
e) Different junctions are at dissimilar temperature.
Two wires on a piano are the same length and are pulled by the same tension. wire 1 vibrates at a frequency 1.5 times the frequency of wire 2. Calculate the ratio of their masses (
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the unit of force and length are doubled, the unit of energy will be
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A sinusoidal voltage trace displayed by an oscilloscope is shown in Figure. If the 'time/cm' switch is on 500µs/cm and the 'volts/cm' switch is on 5V/cm, find, for the waveform,
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