Physics Suitable impurities are added to a semiconductor depending on its use. This is done in order to increase its electrical resistivity increase its electrical conductivity increase its life enable it to withstand higher voltages increase its electrical resistivity increase its electrical conductivity increase its life enable it to withstand higher voltages ANSWER DOWNLOAD EXAMIANS APP
Physics We feel cool when we sit near the fan, this is because Air vapourises the sweat on our body. Fan cools surrounding air. Fan gives cool air. We feel cool when air touches the body. Air vapourises the sweat on our body. Fan cools surrounding air. Fan gives cool air. We feel cool when air touches the body. ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not a property of heavy water ? Boiling point of heavy water is lower than that or ordinary water It produces corrosion Density of heavy water is higher than that of ordinary water Freezing point of heavy water is higher than that of ordinary water Boiling point of heavy water is lower than that or ordinary water It produces corrosion Density of heavy water is higher than that of ordinary water Freezing point of heavy water is higher than that of ordinary water ANSWER DOWNLOAD EXAMIANS APP
Physics A bomb explodes on the moon. You will hear its sound on earth after ________ You cannot hear the sound of explosion 2 hours 20 minutes 20 minutes 3.7 hours You cannot hear the sound of explosion 2 hours 20 minutes 20 minutes 3.7 hours ANSWER DOWNLOAD EXAMIANS APP
Physics In which one of the following the phenomenon of total internal reflection of light is used ? Twinkling of stars Working of binoculars Formation of mirage Formation of rainbow Twinkling of stars Working of binoculars Formation of mirage Formation of rainbow ANSWER DOWNLOAD EXAMIANS APP
Physics A machine powered by rotating blades is a Solar panel None of these Turbines Fumerole Solar panel None of these Turbines Fumerole ANSWER DOWNLOAD EXAMIANS APP
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