Physics Suitable impurities are added to a semiconductor depending on its use. This is done in order to increase its life increase its electrical conductivity enable it to withstand higher voltages increase its electrical resistivity increase its life increase its electrical conductivity enable it to withstand higher voltages increase its electrical resistivity ANSWER DOWNLOAD EXAMIANS APP
Physics When a steel ball is placed on the surface of mercury, it does not sink because Of the high viscosity of mercury Of the surface tension of mercury The density of mercury is greater than that of steel Mercury is a semisolid Of the high viscosity of mercury Of the surface tension of mercury The density of mercury is greater than that of steel Mercury is a semisolid ANSWER DOWNLOAD EXAMIANS APP
Physics The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as Infrasonics Megasonics Ultrasonics Audible sounds Infrasonics Megasonics Ultrasonics Audible sounds ANSWER DOWNLOAD EXAMIANS APP
Physics What is another name for energy of motion? Rotational energy Potential energy Kinetic energy Motional energy Rotational energy Potential energy Kinetic energy Motional energy ANSWER DOWNLOAD EXAMIANS APP
Physics The height of a geo-stationary satellite from the Earth's surface is approximately : None of these 30,000 km 42,000 km 36,000 km None of these 30,000 km 42,000 km 36,000 km ANSWER DOWNLOAD EXAMIANS APP
Physics The wall of a dam is broader at the base To withstand pressure that increases with depth Because streamlining is required To withstand pressure that increases in a horizontal plane To withstand pressure that is increased with atmospheric pressure To withstand pressure that increases with depth Because streamlining is required To withstand pressure that increases in a horizontal plane To withstand pressure that is increased with atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
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