Physics Railway tracks are banked on curves so that Necessary centripetal force may be obtained from the horizontal component of the weight of the train Necessary centrifugal force may be obtained from the horizontal component of the weight of the train The train may not fall down inwards No frictional force may be produced between the tracks and the wheels of the train Necessary centripetal force may be obtained from the horizontal component of the weight of the train Necessary centrifugal force may be obtained from the horizontal component of the weight of the train The train may not fall down inwards No frictional force may be produced between the tracks and the wheels of the train ANSWER DOWNLOAD EXAMIANS APP
Physics In mirrors the back surface is coated with a thin layer of : Silver nitrate Red oxide Silver Mercury Silver nitrate Red oxide Silver Mercury ANSWER DOWNLOAD EXAMIANS APP
Physics What is the unit of the physical quantity Entropy? Pascal per kelvin Joule per kelvin Newton per kelvin Watt per kelvin Pascal per kelvin Joule per kelvin Newton per kelvin Watt per kelvin ANSWER DOWNLOAD EXAMIANS APP
Physics Sound is heard over longer distances on rainy days because Sound travels faster in moist air Sound travels slowly in moist air Moist air does not absorb sound Moist air absorbs sound Sound travels faster in moist air Sound travels slowly in moist air Moist air does not absorb sound Moist air absorbs sound ANSWER DOWNLOAD EXAMIANS APP
Physics The Hooke's law is valid for Entire stress strain curve Entire elastic region of the stress strain curve Elastic as well as plastic region of the stress strain curve Only proportional region of the stress strain curve Entire stress strain curve Entire elastic region of the stress strain curve Elastic as well as plastic region of the stress strain curve Only proportional region of the stress strain curve ANSWER DOWNLOAD EXAMIANS APP
Physics Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen? The heavier mass will reach greater height Both will reach the same height Any of them may reach greater height The lighter mass will reach greater height The heavier mass will reach greater height Both will reach the same height Any of them may reach greater height The lighter mass will reach greater height ANSWER DOWNLOAD EXAMIANS APP
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