Conductivity of platinum __________________?
A. Remains constant with change in temperature
B. Increases with increase in temperature
C. Decreases with increase in temperature
D. Increases linearly with increase in temperature
A. Remains constant with change in temperature
B. Increases with increase in temperature
C. Decreases with increase in temperature
D. Increases linearly with increase in temperature
A.change of electrical resistance with change in temperature
B.volumetric expansion of mercury with increase in temperature
C.increase of vapour pressure with increase in temperature
D.linear expansion with increase in temperature
A.current
B.e.m.f.
C.temperature
D.flow rate
A.depends on the tempaterature of hot junction
B.depends on the temperature of cold junction
C.depends on the temperature difference between hot and cold junctions
D.is constant for all temperature differences between hot and cold junctions
A.ohm/cm
B.mho/cm
C.ohm-cm
D.mho-cm
A.6
B.8
C.12
D.3
A.change of angle of refraction with composition
B.polarisation of light
C.change of electrical conductivity of solution with composition
D.change of electrical resistance with temperature.
A. diffuses all the thermal rays in the different directions
B. absorbs all the thermal rays
C. negligible absorptivity but high reflectivity
D.Allows all the incident radiation to pass through it
Continue reading “The diathermous body is one that ______________?”
A.NaPbO2
B.Na2PbO
C.Na2PbO2
D.Na4PbO
Continue reading “Sodium plumbite has the chemical formula____________?”
A.Relative large thermal e.m.f.
B.Resistance to corrosion and oxidation
C.Non-linear relation of e.m.f. to temperature
D.Precision of calibration