Physics Which layer of the earth's atmosphere reflect back the radio waves to the earth's surface ? Stratosphere Exosphere Mesosphere Ionosphere Stratosphere Exosphere Mesosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Physics A transformer works on the principle of Inverter Self induction Generator Mutual induction Inverter Self induction Generator Mutual induction ANSWER DOWNLOAD EXAMIANS APP
Physics The sounds having a frequency of 20 Hertz to 20,000 Hertz are known as Audible sounds Infrasonics Ultrasonics Megasonics Audible sounds Infrasonics Ultrasonics Megasonics ANSWER DOWNLOAD EXAMIANS APP
Physics The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by Johannes Kepler Martin Luther Copernicus Galileo Johannes Kepler Martin Luther Copernicus Galileo ANSWER DOWNLOAD EXAMIANS APP
Physics The flux commonly used in brazing is Zinc chloride Resin plus alcohol Borax Ammonium chloride Zinc chloride Resin plus alcohol Borax Ammonium chloride ANSWER DOWNLOAD EXAMIANS APP
Physics The threshold frequency is the frequency below which : Photo electric emission is not possible Photo current increases with voltage Photo current is constant Photo current decreases with voltage Photo electric emission is not possible Photo current increases with voltage Photo current is constant Photo current decreases with voltage ANSWER DOWNLOAD EXAMIANS APP
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