Physics Why does a cannon recoil after firing ? Conservation of energy Newton's first law of motion Backward thrust of gases produced Newton's third law of motion Conservation of energy Newton's first law of motion Backward thrust of gases produced Newton's third law of motion ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following are used for accurately measuring very small time intervals ? Quartz clocks White dwarfs Pulsars Atomic clocks Quartz clocks White dwarfs Pulsars Atomic clocks ANSWER DOWNLOAD EXAMIANS APP
Physics A person lifts luggage of 20 kg from the ground and puts it on his head 2m above the ground. Calculate the work done by him. (g = 10 ) 400J 40J 200J 20 J 400J 40J 200J 20 J ANSWER DOWNLOAD EXAMIANS APP
Physics Thermocouple consists of Two similar metals Metal and an insulator Two dissimilar metals Metal and a semiconductor Two similar metals Metal and an insulator Two dissimilar metals Metal and a semiconductor ANSWER DOWNLOAD EXAMIANS APP
Physics The pressure exerted by a 760 mm column of mercury at 0°C is known as 1 atmosphere 1 poise 1 pascal 1 bar 1 atmosphere 1 poise 1 pascal 1 bar ANSWER DOWNLOAD EXAMIANS APP
Physics The blue colour of water in the sea is due to Reflection of blue sky by sea water Absorption of other colours except blue by water molecules Scattering of blue light by water molecules Reflection of blue light by impurities in sea water Reflection of blue sky by sea water Absorption of other colours except blue by water molecules Scattering of blue light by water molecules Reflection of blue light by impurities in sea water ANSWER DOWNLOAD EXAMIANS APP
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