Physics A copper disc has a hole. If the disc is heated, the size of the hole Increases First increases and than decreases Decreases No change Increases First increases and than decreases Decreases No change ANSWER DOWNLOAD EXAMIANS APP
Physics In order to make an electromagnet you need a Thin coated copper wire Dry cell batteries Iron nail All of these Thin coated copper wire Dry cell batteries Iron nail All of these ANSWER DOWNLOAD EXAMIANS APP
Physics In which form is the supplied heat energy stored during change in temperature of substance? Kinetic energy Heat energy Both kinetic and potential energy Potential energy Kinetic energy Heat energy Both kinetic and potential energy Potential energy ANSWER DOWNLOAD EXAMIANS APP
Physics Why two thin shirts can keep us warmer than a single thick shirt in winter ? Air layer between two shirts works as good conductor Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts behaves like insulating media No radiation of heat takes place Air layer between two shirts works as good conductor Two thin shirts become thicker so prevent transmission of heat Air layer between two shirts behaves like insulating media No radiation of heat takes place ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the unit of perceived loudness of sound ? Phon Hertz Decibel Sone Phon Hertz Decibel Sone ANSWER DOWNLOAD EXAMIANS APP
Physics A decibel is The wavelength of noise A musical note A measure of sound level A musical instrument The wavelength of noise A musical note A measure of sound level A musical instrument ANSWER DOWNLOAD EXAMIANS APP
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