Physics The cover of a solar cooker is made of glass because It reflects sun's rays It absorbs sun's rays It retains the heat inside by the green house effect It rediates heat better than metals It reflects sun's rays It absorbs sun's rays It retains the heat inside by the green house effect It rediates heat better than metals ANSWER DOWNLOAD EXAMIANS APP
Physics A device used for converting a.c. into d.c. is called Rectifier Dynamo Induction coil Transformer Rectifier Dynamo Induction coil Transformer ANSWER DOWNLOAD EXAMIANS APP
Physics Which colour has the highest energy? Blue White Red Violet Blue White Red Violet ANSWER DOWNLOAD EXAMIANS APP
Physics Ball bearings are used in cycles, scooters etc to Reduce the friction between ground and the whee Reduce the friction between the wheel and the axle None of these Increase the friction between the wheel and the axle Reduce the friction between ground and the whee Reduce the friction between the wheel and the axle None of these Increase the friction between the wheel and the axle ANSWER DOWNLOAD EXAMIANS APP
Physics Submerged objects can be located using Pulsar Sonar Radar Quasar Pulsar Sonar Radar Quasar ANSWER DOWNLOAD EXAMIANS APP
Physics A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat? Conduction and radiation only Conduction and convection only Conduction, convection and radiation Convection and radiation only Conduction and radiation only Conduction and convection only Conduction, convection and radiation Convection and radiation only ANSWER DOWNLOAD EXAMIANS APP
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