Physics Railway tracks are banked on curves so that Necessary centripetal force may be obtained from the horizontal component of the weight of the train No frictional force may be produced between the tracks and the wheels of the train The train may not fall down inwards Necessary centrifugal force may be obtained from the horizontal component of the weight of the train Necessary centripetal force may be obtained from the horizontal component of the weight of the train No frictional force may be produced between the tracks and the wheels of the train The train may not fall down inwards Necessary centrifugal force may be obtained from the horizontal component of the weight of the train ANSWER DOWNLOAD EXAMIANS APP
Physics The swing of a spinning cricket ball in air can be explained on the basis of Turbulence caused by wind. Bernoulli's theorem. Buoyancy of air. Sudden change in wind direction. Turbulence caused by wind. Bernoulli's theorem. Buoyancy of air. Sudden change in wind direction. ANSWER DOWNLOAD EXAMIANS APP
Physics A bomb explodes on the moon. You will hear its sound on earth after ________ 3.7 hours 20 minutes You cannot hear the sound of explosion 2 hours 20 minutes 3.7 hours 20 minutes You cannot hear the sound of explosion 2 hours 20 minutes ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is optical illusion? Mirage Halo Rainbow Earthshine Mirage Halo Rainbow Earthshine ANSWER DOWNLOAD EXAMIANS APP
Physics A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is Of higher pitch when train departs Of higher pitch when train arrives The same in both cases in all respects Of higher intensity when train arrives Of higher pitch when train departs Of higher pitch when train arrives The same in both cases in all respects Of higher intensity when train arrives ANSWER DOWNLOAD EXAMIANS APP
Physics When a constant force acts on an object with a mass of 8 kg for a duration of 3 s. it increases the object's velocity from 4 m/s to 6 m/s . What is the magnitude of the applied force? 5.33 N 3.33 N 4.33 N 6.33 N 5.33 N 3.33 N 4.33 N 6.33 N ANSWER DOWNLOAD EXAMIANS APP
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