Physics Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by Carbon dioxide Ammonia Chlorine Ozone Carbon dioxide Ammonia Chlorine Ozone ANSWER DOWNLOAD EXAMIANS APP
Physics The device which converts AC to DC is Amplifier Rectifier Oscillator None of these Amplifier Rectifier Oscillator None of these ANSWER DOWNLOAD EXAMIANS APP
Physics In radio-communication, the signals emitted by transmitting antenna are reflected on Troposphere Ionosphere Stratosphere Ozonosphere Troposphere Ionosphere Stratosphere Ozonosphere ANSWER DOWNLOAD EXAMIANS APP
Physics In superconductors, the energy gap is due to Electron-phonon interaction Phonon-phonon interaction Electron-photon intercation Electron-electron interaction Electron-phonon interaction Phonon-phonon interaction Electron-photon intercation Electron-electron interaction ANSWER DOWNLOAD EXAMIANS APP
Physics Point A is at a lower electrical potential than point B. An electron between them on the line joining them will Move at right angles to the line joining A and B Move towards B Remain at rest Move towards A Move at right angles to the line joining A and B Move towards B Remain at rest Move towards A ANSWER DOWNLOAD EXAMIANS APP
Physics The sky appears blue because of Reflection on sea water Scattering of light Emision of blue wavelength by the sun Atmospheric water vapour Reflection on sea water Scattering of light Emision of blue wavelength by the sun Atmospheric water vapour ANSWER DOWNLOAD EXAMIANS APP
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