Physics Which of the following principle is used to produce ''low-temperatures' ? Adiabatic demagnetisation Super conductivity Thermo-electric effect Joule-Kelvin effect Adiabatic demagnetisation Super conductivity Thermo-electric effect Joule-Kelvin effect ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following scientific discoveries was made by C.V. Raman? Controlled nuclear fission Super Conductivity Inelastic scattering of light by molecules Cyclotron Controlled nuclear fission Super Conductivity Inelastic scattering of light by molecules Cyclotron ANSWER DOWNLOAD EXAMIANS APP
Physics The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because The glass of the bell jar absorbs the sound waves The bell jar is too small There is no air or any other gas in the bell jar The ringing is not loud enough The glass of the bell jar absorbs the sound waves The bell jar is too small There is no air or any other gas in the bell jar The ringing is not loud enough ANSWER DOWNLOAD EXAMIANS APP
Physics Sound becomes hazardous noise pollution at decibels? Above 30 db Above 50 db Above 120 db Above 80 db Above 30 db Above 50 db Above 120 db Above 80 db ANSWER DOWNLOAD EXAMIANS APP
Physics If the spinning speed of the earth is increased then the weight of body at the equator Increases Same Double Decreases Increases Same Double Decreases ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following was the first theory of superconductivity? Ginzburg Landau theory Quantum field theory Resonating valence bond theory London theory Ginzburg Landau theory Quantum field theory Resonating valence bond theory London theory ANSWER DOWNLOAD EXAMIANS APP
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