Choose the correct alternative from the blacket:- Alloys of metals usually have _________(greater or less)resistivity than that of their constrituent metals.

Choose the correct alternative from the bracket:- The unit of capacitance is ……… (Farad/henry).

Choose the correct alternative: Alloys usually have much (lower/higher) temperature coefficients of resistance than pure metals.

Choose the correct alternative from the bracket. Power of a lens Is the reciprocal of its focal length expressed in______ (Dioptre// metres)

Choose the correct alternative from the brackets:- The drift velocity of electrons in a metalic conductor decreases with _________ In temperature (Increase/ decrease).

Choose the correct alternative from the brackets:- A heat sensitive resistor whose resistance varies appreciably with temperature is known as a ________ (Rheostat / Thermistor).

Choose the correct alternative from the bracket.:- (AC current//choke coil) is a pure inductor used to reduce the alternating current without the wastage of energy.

An object released near the surface of the earth is said to be in free fall.(Neglect the air resistance). Choose the correct alternative from the clues given at the end of the statement. "Free fall is an example of __________ accelerated motion."(uniformly/nonuniformly).

Choose the correct alternative: The resistivity of a typical insulator (e.g. amber) is greater than that of a metal by a factor of the order of ( 10^(22) / 10^3 )

If the resistivity of an alloy is rho^(1) and that of constituent metals is rho , then

Choose the correct alternative: The resistivity of alloy manganin (is nearly indepent of / increases rapidly) with increase of temperature.