Physics The mercury and sodium street lamps light up because of : Atomic emission Atomic absorption Electron emission Electron absorption Atomic emission Atomic absorption Electron emission Electron absorption ANSWER DOWNLOAD EXAMIANS APP
Physics Bats can sense obstacles because they produce Infrasonic sound waves Ultrasonic sound waves Supersonic sound waves Micro sound waves Infrasonic sound waves Ultrasonic sound waves Supersonic sound waves Micro sound waves ANSWER DOWNLOAD EXAMIANS APP
Physics Which one among the following is not an electromagnetic wave? R-Ray Cathode Ray X-Ray Infrared Ray R-Ray Cathode Ray X-Ray Infrared Ray ANSWER DOWNLOAD EXAMIANS APP
Physics Railway tracks are banked on curves so that The train may not fall down inwards No frictional force may be produced between the tracks and the wheels of the train 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 The train may not fall down inwards No frictional force may be produced between the tracks and the wheels of the train 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 ANSWER DOWNLOAD EXAMIANS APP
Physics An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speed of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct? Ve = Vp Ve < Vp Cannot be determined Ve > Vp Ve = Vp Ve < Vp Cannot be determined Ve > Vp ANSWER DOWNLOAD EXAMIANS APP
Physics The angle between the ________ and the incident ray is called the angle of incidence. Tangent Reflected ray Normal Surface Tangent Reflected ray Normal Surface ANSWER DOWNLOAD EXAMIANS APP
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