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 Compressions and Rarefactions are characteristic of Longitudinal waves Both A & B Neither of A & B Transverse waves Longitudinal waves Both A & B Neither of A & B Transverse waves ANSWER DOWNLOAD EXAMIANS APP
Physics Which one is the unit of surface tension of a liquid None of these Joule/ mm Newton /m2 Electron volt /cm2 None of these Joule/ mm Newton /m2 Electron volt /cm2 ANSWER DOWNLOAD EXAMIANS APP
Physics Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit radio waves X-rays visible light ultraviolet light radio waves X-rays visible light ultraviolet light ANSWER DOWNLOAD EXAMIANS APP
Physics When hot liquid is poured into a thick glass tumbler, it cracks because glass : Is a bad conductor of heat so only inner surface expands Has low temperature coefficient of expansion Has a very low specific heat Has high temperature coefficient of expansion Is a bad conductor of heat so only inner surface expands Has low temperature coefficient of expansion Has a very low specific heat Has high temperature coefficient of expansion ANSWER DOWNLOAD EXAMIANS APP
Physics Why does water tank appear shallower when viewed from the top? Due to diffraction Due to reflection Due to total internal reflection Due to refraction Due to diffraction Due to reflection Due to total internal reflection Due to refraction ANSWER DOWNLOAD EXAMIANS APP
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