Physics Why does'nt the hydrogen atom emit X-rays? It has only one electron Its energy levels are very close to each other It is very small in size It is highly electropositive It has only one electron Its energy levels are very close to each other It is very small in size It is highly electropositive ANSWER DOWNLOAD EXAMIANS APP
Physics It is easier to roll a barrel full of coal tar than to pull it because the rolling friction is much less than the sliding friction the full weight of the barrel comes into play when it is pulled coal tar is a liquid and it flows in the barrel when it is rolled more surface area of the barrel is in contact with the road when it is pulled the rolling friction is much less than the sliding friction the full weight of the barrel comes into play when it is pulled coal tar is a liquid and it flows in the barrel when it is rolled more surface area of the barrel is in contact with the road when it is pulled ANSWER DOWNLOAD EXAMIANS APP
Physics The device which converts sound energy into electrical energy is called Amplifier Microphone Transmitter Speaker Amplifier Microphone Transmitter Speaker ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following waves cannot be polarised? Ultrasonic Ultra violet Infrared Radio Ultrasonic Ultra violet Infrared Radio ANSWER DOWNLOAD EXAMIANS APP
Physics Which metal is the best conductor of heat? Copper Gold All of these Silver Copper Gold All of these Silver ANSWER DOWNLOAD EXAMIANS APP
Physics Stars appears to move from east to west because The earth rotates from east to west All stars move from east to west The earth rotates from west to east The background of the stars moves from west to east The earth rotates from east to west All stars move from east to west The earth rotates from west to east The background of the stars moves from west to east ANSWER DOWNLOAD EXAMIANS APP
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