Physics A hydrogen balloon floats up because of Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in height Air pressure decreases with decrease in weight The pressure inside the balloon is more than the pressure outside it Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in height Air pressure decreases with decrease in weight The pressure inside the balloon is more than the pressure outside it ANSWER DOWNLOAD EXAMIANS APP
Physics Dynamo is a device for converting Magnetic energy into electrical energy Mechanical energy into electrical energy Chemical energy into electrical energy Heat energy into electrical energy Magnetic energy into electrical energy Mechanical energy into electrical energy Chemical energy into electrical energy Heat energy into electrical energy ANSWER DOWNLOAD EXAMIANS APP
Physics A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance Varies with the increase of depth of the immersion of the iron piece Does not change Will increase Will decrease Varies with the increase of depth of the immersion of the iron piece Does not change Will increase Will decrease ANSWER DOWNLOAD EXAMIANS APP
Physics If a force acts upon two objects at rest, and having different masses for the same amount of time, then which one of the following will be the same for both the objects? Acceleration Velocity Kinetic Energy Momentum Acceleration Velocity Kinetic Energy Momentum ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following reflects back more sunlight as compared to other three? Land covered with fresh snow Prairie land Sand desert Paddy crop land Land covered with fresh snow Prairie land Sand desert Paddy crop land ANSWER DOWNLOAD EXAMIANS APP
Physics Tesla is a unit of magnetic : Field Flux Induction Moment Field Flux Induction Moment ANSWER DOWNLOAD EXAMIANS APP
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