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 No radiation of heat takes place Air layer between two shirts behaves like insulating media Air layer between two shirts works as good conductor Two thin shirts become thicker so prevent transmission of heat No radiation of heat takes place Air layer between two shirts behaves like insulating media Air layer between two shirts works as good conductor ANSWER DOWNLOAD EXAMIANS APP
Physics Large astronomical telescopes always use as objective combinations of lenses lens None of these mirror combinations of lenses lens None of these mirror ANSWER DOWNLOAD EXAMIANS APP
Physics What is refractive index ? None of above It is defined as the product of speed of light in medium and in vacuum. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. None of above It is defined as the product of speed of light in medium and in vacuum. It is defined as the ratio of speed of light in vacuum to the speed of light in the medium. It is defined as the ratio of speed of light in the medium to the speed of light in vacuum. ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following instruments is used to study dispersion of light ? Spectrometer Telescope Microscope Photometer Spectrometer Telescope Microscope Photometer ANSWER DOWNLOAD EXAMIANS APP
Physics Resistance of human body in dry condition 10 ohm 1000 ohm 10000 ohm 100000 ohm 10 ohm 1000 ohm 10000 ohm 100000 ohm ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is not a simple machine? A pair of scissors A lever The pulley A ramp A pair of scissors A lever The pulley A ramp ANSWER DOWNLOAD EXAMIANS APP
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