Physics Railway tracks are banked on curves necessary centripetal force may be obtained from the horizontal component of the weight of the train the train may not fly off in the opposite direction necessary centrifugal force may be obtained from the horizontal component weight of the train to avoid frictional force between the tracks and wheels necessary centripetal force may be obtained from the horizontal component of the weight of the train the train may not fly off in the opposite direction necessary centrifugal force may be obtained from the horizontal component weight of the train to avoid frictional force between the tracks and wheels ANSWER DOWNLOAD EXAMIANS APP
Physics What property of matter is momentum related to? Velocity Mass Both A & B None of these Velocity Mass Both A & B None of these ANSWER DOWNLOAD EXAMIANS APP
Physics What is the name of the device used to convert alternating current into direct current ? Rectifier Transformer Galvanometer Ammeter Rectifier Transformer Galvanometer Ammeter ANSWER DOWNLOAD EXAMIANS APP
Physics A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be 2P < P > P P 2P < P > P P ANSWER DOWNLOAD EXAMIANS APP
Physics Hertz is the SI unit of Weight Power Frequency Pressure Weight Power Frequency Pressure ANSWER DOWNLOAD EXAMIANS APP
Physics Good conductor of electricity is Kerosene Graphite Paper Dry air Kerosene Graphite Paper Dry air ANSWER DOWNLOAD EXAMIANS APP
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