Physics Materials for rain-proof coats and tents owe their water-proof properties to elasticity viscosity surface tension specific gravity elasticity viscosity surface tension specific gravity ANSWER DOWNLOAD EXAMIANS APP
Physics Where does hydroelectric energy come from? Water Solar Air All of these Water Solar Air All of these ANSWER DOWNLOAD EXAMIANS APP
Physics The colour of sky appears blue due to Refraction Scattering of shorter wave lengths Dispersion Reflection Refraction Scattering of shorter wave lengths Dispersion Reflection ANSWER DOWNLOAD EXAMIANS APP
Physics A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will Decrease Increase Remain unaffected Have its shape changed Decrease Increase Remain unaffected Have its shape changed ANSWER DOWNLOAD EXAMIANS APP
Physics The period of revolution of a geostationary satellite is 24 hours 30 days Changing continuously 365 days 24 hours 30 days Changing continuously 365 days ANSWER DOWNLOAD EXAMIANS APP
Physics Who is the first person to define speed Newton Kepler Galileo Ptolemy Newton Kepler Galileo Ptolemy ANSWER DOWNLOAD EXAMIANS APP
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