Physics Choose the most appropriate answer: Natural radioactivity was discovered by Enrico Fermi Henry Bacquerel Marie Curie Earnest Rutherford Enrico Fermi Henry Bacquerel Marie Curie Earnest Rutherford ANSWER DOWNLOAD EXAMIANS APP
Physics Water pipes in hilly areas often burst on a cold frosty night, because Frost makes the pipes rusty, so they break None of these The material of which pipes are made contracts due to cold and so breaks Water in the pipes freezes and on freezing water expands, so pipes break Frost makes the pipes rusty, so they break None of these The material of which pipes are made contracts due to cold and so breaks Water in the pipes freezes and on freezing water expands, so pipes break ANSWER DOWNLOAD EXAMIANS APP
Physics Bats can sense obstacles because they produce Infrasonic sound waves Ultrasonic sound waves Supersonic sound waves Micro sound waves Infrasonic sound waves Ultrasonic sound waves Supersonic sound waves Micro sound waves ANSWER DOWNLOAD EXAMIANS APP
Physics Total internal reflection can not take place when light goes from : Water to glass Glass to air Glass to water Water to air Water to glass Glass to air Glass to water Water to air ANSWER DOWNLOAD EXAMIANS APP
Physics Heat is transmitted from higher temperature to lower temperature through the actual motion of the molecules in Radiation Both conduction and convection Convection Conduction Radiation Both conduction and convection Convection Conduction ANSWER DOWNLOAD EXAMIANS APP
Physics Metals are good conductors of electricity because: All of these They have high melting point. The atoms are lightly packed. They contain free electrons. All of these They have high melting point. The atoms are lightly packed. They contain free electrons. ANSWER DOWNLOAD EXAMIANS APP
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