Physics A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity will Have its shape changed Decrease Increase Remain unaffected Have its shape changed Decrease Increase Remain unaffected ANSWER DOWNLOAD EXAMIANS APP
Physics Water pipes in hilly areas often burst on a cold frosty night, because The material of which pipes are made contracts due to cold and so breaks Frost makes the pipes rusty, so they break Water in the pipes freezes and on freezing water expands, so pipes break None of these The material of which pipes are made contracts due to cold and so breaks Frost makes the pipes rusty, so they break Water in the pipes freezes and on freezing water expands, so pipes break None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Hydraulic machines work under the Principle of : Joules Law Floatation Law Pascal's Law Newton's Law Joules Law Floatation Law Pascal's Law Newton's Law ANSWER DOWNLOAD EXAMIANS APP
Physics What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space? 35 km/sec 21 km/sec 11.2 km/sec 18 km/sec 35 km/sec 21 km/sec 11.2 km/sec 18 km/sec ANSWER DOWNLOAD EXAMIANS APP
Physics Stars in the sky appear to twinkle due to A series of refractions A surface tension phenomenon A series of reflections Multiple diminishing brightness A series of refractions A surface tension phenomenon A series of reflections Multiple diminishing brightness ANSWER DOWNLOAD EXAMIANS APP
Physics The device which converts sound energy into electrical energy is called Amplifier Transmitter Microphone Speaker Amplifier Transmitter Microphone Speaker ANSWER DOWNLOAD EXAMIANS APP
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