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 ) 200J 400J 40J 20 J 200J 400J 40J 20 J ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following laws validates the statement that matter can neither be created nor destroyed ? Le Chatelier's Principle Law of conservation of mass Law of osmosis Law of conservation of energy Le Chatelier's Principle Law of conservation of mass Law of osmosis Law of conservation of energy ANSWER DOWNLOAD EXAMIANS APP
Physics A black body can absorb radiations of : Higher wavelengths only Lower wavelengths only All wavelengths Intermediate wavelengths only Higher wavelengths only Lower wavelengths only All wavelengths Intermediate wavelengths only ANSWER DOWNLOAD EXAMIANS APP
Physics Stars appear twinkling because of ......... of light. Reflection Emission Scattering Absorption Reflection Emission Scattering Absorption ANSWER DOWNLOAD EXAMIANS APP
Physics The purpose of choke in a fluorescent lamp is : To decrease the resistance To increase the current flow To decrease the current flow Ro decrease the voltage momentarily To decrease the resistance To increase the current flow To decrease the current flow Ro decrease the voltage momentarily ANSWER DOWNLOAD EXAMIANS APP
Physics Oil rises up the wick in a lamp because Of the surface tension phenomenon Oil is very light Of the capillary action phenomenon Of the diffusion of oil through the wick Of the surface tension phenomenon Oil is very light Of the capillary action phenomenon Of the diffusion of oil through the wick ANSWER DOWNLOAD EXAMIANS APP
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