Physics Suitable impurities are added to a semiconductor depending on its use. This is done in order to increase its electrical conductivity increase its life increase its electrical resistivity enable it to withstand higher voltages increase its electrical conductivity increase its life increase its electrical resistivity enable it to withstand higher voltages ANSWER DOWNLOAD EXAMIANS APP
Physics Copper wires are generally used for electrical power transmission instead of iron wire because : Copper is lighter than iron Copper is cheaper than iron Copper can take higher power than iron Copper is a better conductor of electricity than iron Copper is lighter than iron Copper is cheaper than iron Copper can take higher power than iron Copper is a better conductor of electricity than iron ANSWER DOWNLOAD EXAMIANS APP
Physics Two stones of different masses are dropped simultaneously from the top of a building Depends on the composition of the stone Both the stones reach the ground at the same time Larger stone reaches the ground earlier Smaller stone reaches the ground earlier Depends on the composition of the stone Both the stones reach the ground at the same time Larger stone reaches the ground earlier Smaller stone reaches the ground earlier ANSWER DOWNLOAD EXAMIANS APP
Physics Proton carry a Negative Charge Neutral Charge Positive Charge Variable Charge Negative Charge Neutral Charge Positive Charge Variable Charge ANSWER DOWNLOAD EXAMIANS APP
Physics When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon is known as Beats Echo Resonance Doppler effect Beats Echo Resonance Doppler effect ANSWER DOWNLOAD EXAMIANS APP
Physics According to special theory of relativity the mass of a particle Decreases with increase in velocity. Is independent of its velocity. Increases with increase in velocity with respect to an observer. Decreases with decrease in velocity. Decreases with increase in velocity. Is independent of its velocity. Increases with increase in velocity with respect to an observer. Decreases with decrease in velocity. ANSWER DOWNLOAD EXAMIANS APP
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