Physics A hydrogen balloon floats up because of Weight of the balloon is less than the weight of air displaced by it. The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in weight Air pressure decreases with decrease in height Weight of the balloon is less than the weight of air displaced by it. The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in weight Air pressure decreases with decrease in height ANSWER DOWNLOAD EXAMIANS APP
Physics Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly Prevent cold waves from the sky descending on earth Reflect back the heat given by earth Produce heat and radiate it toward earth Absorb heat from the atmosphere send it towards earth Prevent cold waves from the sky descending on earth Reflect back the heat given by earth Produce heat and radiate it toward earth Absorb heat from the atmosphere send it towards earth ANSWER DOWNLOAD EXAMIANS APP
Physics At the Curie temperature, the ferromagnetic materials get converted into Paramagnetic materials None of the others Diamagnetic materials Non-magnetic materials Paramagnetic materials None of the others Diamagnetic materials Non-magnetic materials ANSWER DOWNLOAD EXAMIANS APP
Physics Frictional force acts in The opposite direction of the motion Upward direction All the directions The same direction as the motion The opposite direction of the motion Upward direction All the directions The same direction as the motion ANSWER DOWNLOAD EXAMIANS APP
Physics The absolute refractive index of any medium is always: 1 Less than one More than one 1 Less than one More than one ANSWER DOWNLOAD EXAMIANS APP
Physics If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to ________. 0.3 m 3 m 300 m 30 m 0.3 m 3 m 300 m 30 m ANSWER DOWNLOAD EXAMIANS APP
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