Physics In a railway track, two rails are joined end to end with a gap in between them because Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Steel can be saved Accidents due to expansion in summer can be avoided Accidents due to contraction in winter can be avoided Air-gaps are necessary for bearing the weight of running train Steel can be saved Accidents due to expansion in summer can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics Hot water is poured simultaneously in four metallic tumblers painted outside with different paints. After some time the water will be found to have cooled most in the tumbler painted. Rough white Shining black Shining white Rough black Rough white Shining black Shining white Rough black ANSWER DOWNLOAD EXAMIANS APP
Physics The pressure of a fluid varies with depth h as P = PQ+pgh, where p is the fluid density. This expression is associated with Pascal's law Archimedes' principle Bernoulli's principle Newton's law Pascal's law Archimedes' principle Bernoulli's principle Newton's law ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following produces more severe burns ? Boiling water Hot water Steam Melting iceberg Boiling water Hot water Steam Melting iceberg ANSWER DOWNLOAD EXAMIANS APP
Physics Thermohaline circulation is mainly due to Warmer, less dense water sinking in the ocean and cold water replacing it Warm water being added to the ocean due to industial waste Cold, dense ocean water sinking and warmer water replacing it Winds causing circulation of ocean water Warmer, less dense water sinking in the ocean and cold water replacing it Warm water being added to the ocean due to industial waste Cold, dense ocean water sinking and warmer water replacing it Winds causing circulation of ocean water ANSWER DOWNLOAD EXAMIANS APP
Physics Railway tracks are banked on curves the train may not fly off in the opposite direction necessary centripetal force may be obtained from the horizontal component of the weight of the train necessary centrifugal force may be obtained from the horizontal component weight of the train to avoid frictional force between the tracks and wheels the train may not fly off in the opposite direction necessary centripetal force may be obtained from the horizontal component of the weight of the train necessary centrifugal force may be obtained from the horizontal component weight of the train to avoid frictional force between the tracks and wheels ANSWER DOWNLOAD EXAMIANS APP
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