Physics A small gap is left at the joints of rails in a railway track to Keep the rails equidistant Control the speed of train Avoid the heating of tracks to high temperature Avoid the tracks being distorted due to seasonal temperature variation Keep the rails equidistant Control the speed of train Avoid the heating of tracks to high temperature Avoid the tracks being distorted due to seasonal temperature variation ANSWER DOWNLOAD EXAMIANS APP
Physics The sparkling of a diamond is due to Total internal reflection of light Polarisation of light Interference of light Refraction of light Total internal reflection of light Polarisation of light Interference of light Refraction of light ANSWER DOWNLOAD EXAMIANS APP
Physics In radio-communication, the signals emitted by transmitting antenna are reflected on Stratosphere Troposphere Ozonosphere Ionosphere Stratosphere Troposphere Ozonosphere Ionosphere ANSWER DOWNLOAD EXAMIANS APP
Physics The weakest of all fundamental forces is Gravitational force Electrostatic force Magnetic force Nuclear force Gravitational force Electrostatic force Magnetic force Nuclear force ANSWER DOWNLOAD EXAMIANS APP
Physics The mercury and sodium street lamps light up because of : Atomic emission Electron absorption Atomic absorption Electron emission Atomic emission Electron absorption Atomic absorption Electron emission ANSWER DOWNLOAD EXAMIANS APP
Physics In beta decay what is emitted Proton Neutron All of these Electron Proton Neutron All of these Electron ANSWER DOWNLOAD EXAMIANS APP
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