Physics A body of 4.0 kg is lying at rest. Under the action of a constant force, it gains a speed of 5 m/s. The work done by the force will be ________ 40 J 50 J 30 J 20 J 40 J 50 J 30 J 20 J ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because metals have higher thermal capacity than plastics plastics have a lower density than metals plastics have a higher thermal conductivity than metals metals are good conductor of heat metals have higher thermal capacity than plastics plastics have a lower density than metals plastics have a higher thermal conductivity than metals metals are good conductor of heat ANSWER DOWNLOAD EXAMIANS APP
Physics The colours of stars depend on their Atmospheric pressure Radius Distance Temperature Atmospheric pressure Radius Distance Temperature ANSWER DOWNLOAD EXAMIANS APP
Physics For a body moving with uniform acceleration its final velocity equals ________ 2 x average velocity + initial velocity 2 x average velocity - initial velocity Average velocity - initial velocity Average velocity + initial velocity 2 x average velocity + initial velocity 2 x average velocity - initial velocity Average velocity - initial velocity Average velocity + initial velocity ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following causes adiabatic temperature changes in atmosphere? Partial absorption of solar radiation by the atmosphere Deflection and advection Expansion and compression of the air Latent heat of condensation Partial absorption of solar radiation by the atmosphere Deflection and advection Expansion and compression of the air Latent heat of condensation ANSWER DOWNLOAD EXAMIANS APP
Physics If the temperature of a place increases suddenly, the relative humidity Decreases Increases Remains constant Fluctuates Decreases Increases Remains constant Fluctuates ANSWER DOWNLOAD EXAMIANS APP
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