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 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 The pressure inside the balloon is more than the pressure outside it Air pressure decreases with decrease in height ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not caused by atmospheric refraction of light ? Twinkling of stars at night Sun appearing higher in the sky than it actually is Sun becoming visible two or three minutes before actual sunrise Sun appearing red at sunset Twinkling of stars at night Sun appearing higher in the sky than it actually is Sun becoming visible two or three minutes before actual sunrise Sun appearing red at sunset ANSWER DOWNLOAD EXAMIANS APP
Physics 1 m/s equals ________ km/hr 43967 16/5 43969 18/5 43967 16/5 43969 18/5 ANSWER DOWNLOAD EXAMIANS APP
Physics One watt-hour is equivalent to 6.3 x 10-7 J 3.6 x 103 J 3.6 x 10-3 J 6.3 x 103 J 6.3 x 10-7 J 3.6 x 103 J 3.6 x 10-3 J 6.3 x 103 J ANSWER DOWNLOAD EXAMIANS APP
Physics In the absence of the earth's atmosphere, sky would appear Black Blue White Deep red Black Blue White Deep red ANSWER DOWNLOAD EXAMIANS APP
Physics Two rods, one of copper and other of steel, experience the same upthrust when placed in water.Thus, both have Equal density Equal mass Equal weight Equal volume Equal density Equal mass Equal weight Equal volume ANSWER DOWNLOAD EXAMIANS APP
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