Physics Stars twinkle because the intensity of light emitted by them changes with time. the distance of the stars from the earth changes with time. the refractive index of the different layers of the earth's atmosphere ch None of these the intensity of light emitted by them changes with time. the distance of the stars from the earth changes with time. the refractive index of the different layers of the earth's atmosphere ch None of these ANSWER DOWNLOAD EXAMIANS APP
Physics Ocean currents are an example of Convection Radiation Conduction Insulation Convection Radiation Conduction Insulation ANSWER DOWNLOAD EXAMIANS APP
Physics It is more difficult to walk on ice than on a concrete road because Ice is soft when compared to concrete There is very little friction between the ice and feet pressing it None of these There is more friction between the ice and feer Ice is soft when compared to concrete There is very little friction between the ice and feet pressing it None of these There is more friction between the ice and feer ANSWER DOWNLOAD EXAMIANS APP
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 Necessary centrifugal 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 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 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 ANSWER DOWNLOAD EXAMIANS APP
Physics The electrical domestic tube light gives white fluorescent light because of Heavy current Vacuum inside the tube Falling of ultra violet rays on the white inner coating of the tube Colision between molecules of filled gas under electric current Heavy current Vacuum inside the tube Falling of ultra violet rays on the white inner coating of the tube Colision between molecules of filled gas under electric current ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of sound in air Does not depend on temperature Increases with decrease of temperature Decreases with decrease of temperature Decreases with increase of temperature Does not depend on temperature Increases with decrease of temperature Decreases with decrease of temperature Decreases with increase of temperature ANSWER DOWNLOAD EXAMIANS APP
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