Physics Why two thin shirts can keep us warmer than a single thick shirt in winter ? Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts works as good conductor Air layer between two shirts behaves like insulating media No radiation of heat takes place Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts works as good conductor Air layer between two shirts behaves like insulating media No radiation of heat takes place ANSWER DOWNLOAD EXAMIANS APP
Physics The Laser is a beam of radiations which are Non-coherent and non-monochromatic Non-coherent and monochromatic Coherent and monochromatic Coherent and non-monochromatic Non-coherent and non-monochromatic Non-coherent and monochromatic Coherent and monochromatic Coherent and non-monochromatic ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following was the first theory of superconductivity? Resonating valence bond theory Ginzburg Landau theory Quantum field theory London theory Resonating valence bond theory Ginzburg Landau theory Quantum field theory London theory ANSWER DOWNLOAD EXAMIANS APP
Physics Sound becomes hazardous noise pollution at decibels? Above 50 db Above 30 db Above 120 db Above 80 db Above 50 db Above 30 db Above 120 db Above 80 db ANSWER DOWNLOAD EXAMIANS APP
Physics The ringing of an electric bell in an enclosed evacuated glass bell jar is not heard outside because 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 The glass of the bell jar absorbs the sound waves The bell jar is too small ANSWER DOWNLOAD EXAMIANS APP
Physics 1 Micron is equal to 10–12 m 10–6 m 10–9 m 10–15 m 10–12 m 10–6 m 10–9 m 10–15 m ANSWER DOWNLOAD EXAMIANS APP
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