Physics Certain substances loose their electrical resistance completely at super low temperature. Such substances are called. Dielectrics Semi conductors Superconductors Perfect conductors Dielectrics Semi conductors Superconductors Perfect conductors ANSWER DOWNLOAD EXAMIANS APP
Physics Why does'nt the hydrogen atom emit X-rays? Its energy levels are very close to each other It is highly electropositive It is very small in size It has only one electron Its energy levels are very close to each other It is highly electropositive It is very small in size It has only one electron ANSWER DOWNLOAD EXAMIANS APP
Physics Steam at 100°C causes more severe burns than water at 100°C because Steam has latent heat of vaporisation Water has no specific heat capacity Water has latent heat of fusion Steam has no specific heat capacity Steam has latent heat of vaporisation Water has no specific heat capacity Water has latent heat of fusion Steam has no specific heat capacity ANSWER DOWNLOAD EXAMIANS APP
Physics Sound of frequency below 20 Hz is called supersonics infrasonic audio sounds ultrasonic supersonics infrasonic audio sounds ultrasonic ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is an example of simple harmonic motion? Ball bouncing on floor Simple pendulum motion Earth spinning on its axis Motion of a ceiling fan Ball bouncing on floor Simple pendulum motion Earth spinning on its axis Motion of a ceiling fan ANSWER DOWNLOAD EXAMIANS APP
Physics A mirage occurs because of Diffraction of light Total internal reflection by layers of air Interference of light Reflection by hot ground Diffraction of light Total internal reflection by layers of air Interference of light Reflection by hot ground ANSWER DOWNLOAD EXAMIANS APP
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