Physics Which microscope is often used to view metal surfaces? None of these Scanning tunneling microscopes Optical microscopes Electron microscopes None of these Scanning tunneling microscopes Optical microscopes Electron microscopes ANSWER DOWNLOAD EXAMIANS APP
Physics For photoelectric effect to take place, the metal used as the cathode should have ________ High melting point Low resistance Low melting point Low work function High melting point Low resistance Low melting point Low work function ANSWER DOWNLOAD EXAMIANS APP
Physics When a vehicle passes, TV reception gets distorted. This is because Modern vehicles use electroignition system Spark plug creates electromagnetic disturbances Vehicle pollution affects the performance of the TV components Metal reflects radiowaves Modern vehicles use electroignition system Spark plug creates electromagnetic disturbances Vehicle pollution affects the performance of the TV components Metal reflects radiowaves ANSWER DOWNLOAD EXAMIANS APP
Physics A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps It will fall down at the same place where the string breaks The ball will travel towards the center of the circle and fall down None of these It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down It will fall down at the same place where the string breaks The ball will travel towards the center of the circle and fall down None of these It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down ANSWER DOWNLOAD EXAMIANS APP
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 increase its electrical resistivity enable it to withstand higher voltages increase its life increase its electrical conductivity increase its electrical resistivity enable it to withstand higher voltages ANSWER DOWNLOAD EXAMIANS APP
Physics Hot water is poured simultaneously in four metallic tumblers painted outside with different paints. After some time the water will be found to have cooled most in the tumbler painted. Shining white Shining black Rough black Rough white Shining white Shining black Rough black Rough white ANSWER DOWNLOAD EXAMIANS APP
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