Physics A hydrogen balloon floats up because of Air pressure decreases with decrease in height Air pressure decreases with decrease in weight 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 height Air pressure decreases with decrease in weight 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 ANSWER DOWNLOAD EXAMIANS APP
Physics The unit of noise pollution (level) is : Ppm Decimal Decibel None of these Ppm Decimal Decibel None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Which one among the following doesn't have any effect on velocity of sound ? Humidity Pressure Density Temperature Humidity Pressure Density Temperature ANSWER DOWNLOAD EXAMIANS APP
Physics Rate of change of displacement is known as ________ Speed Velocity Distance Acceleration Speed Velocity Distance Acceleration ANSWER DOWNLOAD EXAMIANS APP
Physics Centrifugal force increases with Acceleration Pressure Temperature Humidity Acceleration Pressure Temperature Humidity ANSWER DOWNLOAD EXAMIANS APP
Physics A concave lens always forms an image which is Real and erect Virtual and erect Real and inverted Virtual and inverted Real and erect Virtual and erect Real and inverted Virtual and inverted ANSWER DOWNLOAD EXAMIANS APP
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