Physics A hydrogen balloon floats up because of 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 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 ANSWER DOWNLOAD EXAMIANS APP
Physics A thin oil film on a water surface appears coloured because of Reflection Diffraction Interference Polarization Reflection Diffraction Interference Polarization ANSWER DOWNLOAD EXAMIANS APP
Physics Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? 1.8 km, 0.15 km 2.8 km, 0.25 km 3.3 km, 0.30 km 2.2 km, 0.20 km 1.8 km, 0.15 km 2.8 km, 0.25 km 3.3 km, 0.30 km 2.2 km, 0.20 km ANSWER DOWNLOAD EXAMIANS APP
Physics The instrument which uses sound waves to measure the depth of oceans is Radar Sonar Altimeter Venturimeter Radar Sonar Altimeter Venturimeter ANSWER DOWNLOAD EXAMIANS APP
Physics What is the resistance (in ohm) of an electrical component if a current of 0.1 A passes through it on application of 5 V of potential difference across it? 0.5 1 50 100 0.5 1 50 100 ANSWER DOWNLOAD EXAMIANS APP
Physics If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is Height of the liquid column Density of the liquid Surface area of the bottom of the vessel Acceleration due to gravity at the bottom of the vessel Height of the liquid column Density of the liquid Surface area of the bottom of the vessel Acceleration due to gravity at the bottom of the vessel ANSWER DOWNLOAD EXAMIANS APP
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