Physics Sound becomes hazardous noise pollution at decibels? Above 50 db Above 120 db Above 80 db Above 30 db Above 50 db Above 120 db Above 80 db Above 30 db ANSWER DOWNLOAD EXAMIANS APP
Physics To open a door easily, the handle should be fixed In the middle None of these Near the hinges Away from mid-point opposite to hinges In the middle None of these Near the hinges Away from mid-point opposite to hinges ANSWER DOWNLOAD EXAMIANS APP
Physics Total internal reflection can not take place when light goes from : Water to glass Glass to air Water to air Glass to water Water to glass Glass to air Water to air Glass to water ANSWER DOWNLOAD EXAMIANS APP
Physics Why do birds not have respiratory trouble at the time of flying at high altitude ? Their lungs are very large They use less oxygen They fly inactively They have extra air sacs Their lungs are very large They use less oxygen They fly inactively They have extra air sacs ANSWER DOWNLOAD EXAMIANS APP
Physics Inside an aeroplane, flying at a high altitude, the pressure inside is less than the pressure outside. normal atmospheric pressure is maintained by the use of air pumps. the pressure is the same as that outside. normal humidity and partial vacuum are maintained. the pressure inside is less than the pressure outside. normal atmospheric pressure is maintained by the use of air pumps. the pressure is the same as that outside. normal humidity and partial vacuum are maintained. ANSWER DOWNLOAD EXAMIANS APP
Physics A body of mass 2 kg is thrown upward with initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be : (g = 10 m/s2) 100 J 0 J 200 J 400 J 100 J 0 J 200 J 400 J ANSWER DOWNLOAD EXAMIANS APP
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