Physics A copper disc has a hole. If the disc is heated, the size of the hole First increases and than decreases Increases Decreases No change First increases and than decreases Increases Decreases No change ANSWER DOWNLOAD EXAMIANS APP
Physics Sound of frequency below 20 Hz is called ultrasonic audio sounds supersonics infrasonic ultrasonic audio sounds supersonics infrasonic ANSWER DOWNLOAD EXAMIANS APP
Physics Electron microscope works on which of the following principles? Optical interference Wave Nature of electrons Faraday's law of Electromagnetic induction Motion of charged particle in electromagnetic fields Optical interference Wave Nature of electrons Faraday's law of Electromagnetic induction Motion of charged particle in electromagnetic fields ANSWER DOWNLOAD EXAMIANS APP
Physics When light passes from one medium to another, this phenomenon of change in its direction is called ________ Diffraction No option is correct Refraction Propagation Diffraction No option is correct Refraction Propagation ANSWER DOWNLOAD EXAMIANS APP
Physics A transformer works on the principle of Generator Inverter Mutual induction Self induction Generator Inverter Mutual induction Self induction ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following group of elements are diamagnetic? Hydrogen, oxygen, Argon Oxygen, copper, silver Argon, copper, silver Hydrogen, argon, copper Hydrogen, oxygen, Argon Oxygen, copper, silver Argon, copper, silver Hydrogen, argon, copper ANSWER DOWNLOAD EXAMIANS APP
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