Materials and Components The elements which become superconducting at extremely low temperatures are Relatively poor conductors at room temperature Good conductors at room temperature Ferromagnetic at room temperature Insulators at room temperature Relatively poor conductors at room temperature Good conductors at room temperature Ferromagnetic at room temperature Insulators at room temperature ANSWER DOWNLOAD EXAMIANS APP
Materials and Components With increase in temperature, the electrical conductivity would Decrease in metals as well as in intrinsic semiconductor Decrease in metals but increase in intrinsic semiconductor Increase in metals but decrease in intrinsic semiconductor Increase in metals as well as in intrinsic semiconductor Decrease in metals as well as in intrinsic semiconductor Decrease in metals but increase in intrinsic semiconductor Increase in metals but decrease in intrinsic semiconductor Increase in metals as well as in intrinsic semiconductor ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The resistance of a photoconductor May increase or decrease with increase in light intensity Remains constant Decreases with increase in light intensity Increases with increase in light intensity May increase or decrease with increase in light intensity Remains constant Decreases with increase in light intensity Increases with increase in light intensity ANSWER DOWNLOAD EXAMIANS APP
Materials and Components Spontaneous magnetisation is characteristic of ferromagnetic materials. False True False True ANSWER DOWNLOAD EXAMIANS APP
Materials and Components The rule that resistivity of conductors can be separated into two parts viz. temperature independent and temperature dependent is known as Curie rule Debye rule Matthiessen’s rule Onne’s rule Curie rule Debye rule Matthiessen’s rule Onne’s rule ANSWER DOWNLOAD EXAMIANS APP
Materials and Components When a dielectric material is subjected to alternating field, the absorption of energy by the material from the field is given by the imaginary part of polarizability. True False True False ANSWER DOWNLOAD EXAMIANS APP
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