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 Holography is a technique of Recording a permanent three dimensional multicolour photograph Recording a permanent three dimensional photograph of a given single colour or a multicolour Recording a permanent three dimensional black and white photograph Recording a permanent, sharp two diimensional black and white or multicolour photograph Recording a permanent three dimensional multicolour photograph Recording a permanent three dimensional photograph of a given single colour or a multicolour Recording a permanent three dimensional black and white photograph Recording a permanent, sharp two diimensional black and white or multicolour photograph ANSWER DOWNLOAD EXAMIANS APP
Physics A nuclear reactor is said to have become 'critical' when It is shut down to avoid explosion It stops due to malfunctioning It starts emitting dangerous radioactive radiations It is ready to produce controlled energy It is shut down to avoid explosion It stops due to malfunctioning It starts emitting dangerous radioactive radiations It is ready to produce controlled energy ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is an insulator? Mercury Carbon Glass Germanium Mercury Carbon Glass Germanium ANSWER DOWNLOAD EXAMIANS APP
Physics A bomb explodes on the moon. You will hear its sound on earth after ________ 2 hours 20 minutes You cannot hear the sound of explosion 20 minutes 3.7 hours 2 hours 20 minutes You cannot hear the sound of explosion 20 minutes 3.7 hours ANSWER DOWNLOAD EXAMIANS APP
Physics Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ? Mesosphere Exosphere Ionosphere Stratosphere Mesosphere Exosphere Ionosphere Stratosphere ANSWER DOWNLOAD EXAMIANS APP
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