Physics Why two thin shirts can keep us warmer than a single thick shirt in winter ? No radiation of heat takes place Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts behaves like insulating media Air layer between two shirts works as good conductor No radiation of heat takes place Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts behaves like insulating media Air layer between two shirts works as good conductor ANSWER DOWNLOAD EXAMIANS APP
Physics Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit X-rays ultraviolet light radio waves visible light X-rays ultraviolet light radio waves visible light ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the unit of perceived loudness of sound ? Phon Decibel Hertz Sone Phon Decibel Hertz Sone ANSWER DOWNLOAD EXAMIANS APP
Physics The unit of Planck's constant is Js2 Js–2 J/s Js Js2 Js–2 J/s Js ANSWER DOWNLOAD EXAMIANS APP
Physics The group of solar cells joined together in a definite pattern is called a Battery Solar cell panel Solar cooker Solar heater Battery Solar cell panel Solar cooker Solar heater ANSWER DOWNLOAD EXAMIANS APP
Physics In a rechargeable cell what kind of energy is stored within the cell? Electrical energy Chemical energy Potential energy Kinetic energy Electrical energy Chemical energy Potential energy Kinetic energy ANSWER DOWNLOAD EXAMIANS APP
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