Physics A hydrogen balloon floats up because of The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in height Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in weight The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in height Weight of the balloon is less than the weight of air displaced by it. Air pressure decreases with decrease in weight ANSWER DOWNLOAD EXAMIANS APP
Physics A pilot has to release the bomb to hit a target None of these Beyond the target Before the target Right above the target None of these Beyond the target Before the target Right above the target ANSWER DOWNLOAD EXAMIANS APP
Physics Why the needle of iron swims on water surface when it is kept gently ? Due to its shape Due to surface tension It will remain under the water, when it will displace more water than its weight The density of needle is less than that of water Due to its shape Due to surface tension It will remain under the water, when it will displace more water than its weight The density of needle is less than that of water ANSWER DOWNLOAD EXAMIANS APP
Physics The group of solar cells joined together in a definite pattern is called a Battery Solar cooker Solar cell panel Solar heater Battery Solar cooker Solar cell panel Solar heater ANSWER DOWNLOAD EXAMIANS APP
Physics The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by Copernicus Galileo Johannes Kepler Martin Luther Copernicus Galileo Johannes Kepler Martin Luther ANSWER DOWNLOAD EXAMIANS APP
Physics The energy of a photon varies directly with its Frequency None of these Speed Wave length Frequency None of these Speed Wave length ANSWER DOWNLOAD EXAMIANS APP
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