Physics In a railway track, two rails are joined end to end with a gap in between them because Steel can be saved Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Accidents due to expansion in summer can be avoided Steel can be saved Air-gaps are necessary for bearing the weight of running train Accidents due to contraction in winter can be avoided Accidents due to expansion in summer can be avoided ANSWER DOWNLOAD EXAMIANS APP
Physics A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat? Convection and radiation only Conduction, convection and radiation Conduction and radiation only Conduction and convection only Convection and radiation only Conduction, convection and radiation Conduction and radiation only Conduction and convection only ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is optical illusion? Earthshine Rainbow Halo Mirage Earthshine Rainbow Halo Mirage ANSWER DOWNLOAD EXAMIANS APP
Physics According to special theory of relativity the mass of a particle Decreases with increase in velocity. Is independent of its velocity. Decreases with decrease in velocity. Increases with increase in velocity with respect to an observer. Decreases with increase in velocity. Is independent of its velocity. Decreases with decrease in velocity. Increases with increase in velocity with respect to an observer. ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is not a form of Energy? Pressure Motion Sound Heat Pressure Motion Sound Heat ANSWER DOWNLOAD EXAMIANS APP
Physics The intensity ratio of waves is 25 : 9. What is the ratio of their amplitudes? 1.0479166666667 0.12847222222222 0.21041666666667 2.0958333333333 1.0479166666667 0.12847222222222 0.21041666666667 2.0958333333333 ANSWER DOWNLOAD EXAMIANS APP
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