Physics A person lifts luggage of 20 kg from the ground and puts it on his head 2m above the ground. Calculate the work done by him. (g = 10 ) 400J 40J 200J 20 J 400J 40J 200J 20 J ANSWER DOWNLOAD EXAMIANS APP
Physics Tap water is placed in an open pad and allowed to evaporate. After some time the temperature of water Increases to a great extent Decreases rapidly Decreases slightly Increases slightly Increases to a great extent Decreases rapidly Decreases slightly Increases slightly ANSWER DOWNLOAD EXAMIANS APP
Physics Electricity is transmitted over long distances It is safer There is less wastage of energy It is fast It is cheaper It is safer There is less wastage of energy It is fast It is cheaper ANSWER DOWNLOAD EXAMIANS APP
Physics Certain substances loose their electrical resistance completely at super low temperature. Such substances are called. Superconductors Dielectrics Semi conductors Perfect conductors Superconductors Dielectrics Semi conductors Perfect conductors ANSWER DOWNLOAD EXAMIANS APP
Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper is lighter than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper can take higher power than iron Copper is lighter than iron Copper is a better conductor of electricity than iron Copper is cheaper than iron Copper can take higher power than iron ANSWER DOWNLOAD EXAMIANS APP
Physics The first law of thermodynamics is simply the case of The law of heat exchange The law of conservation of energy Charle's law Newton's law of cooling The law of heat exchange The law of conservation of energy Charle's law Newton's law of cooling ANSWER DOWNLOAD EXAMIANS APP
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