Physics Railway tracks are banked on curves to avoid frictional force between the tracks and wheels necessary centrifugal force may be obtained from the horizontal component weight of the train 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 to avoid frictional force between the tracks and wheels necessary centrifugal force may be obtained from the horizontal component weight of the train 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 ANSWER DOWNLOAD EXAMIANS APP
Physics Plants are dried up in winter due to frost because Evaporation does not take place Photosynthesis does not take place at such low temperature Respiration does not take place at low temperature There is mechanical loss of tissues and drought condition prevails Evaporation does not take place Photosynthesis does not take place at such low temperature Respiration does not take place at low temperature There is mechanical loss of tissues and drought condition prevails ANSWER DOWNLOAD EXAMIANS APP
Physics What is the escape velocity of the rocket in the earth? 13.2 km/sec 10.2 km/sec 12.2 km/sec 11.2 km/sec 13.2 km/sec 10.2 km/sec 12.2 km/sec 11.2 km/sec ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is an example of simple harmonic motion? Earth spinning on its axis Simple pendulum motion Ball bouncing on floor Motion of a ceiling fan Earth spinning on its axis Simple pendulum motion Ball bouncing on floor Motion of a ceiling fan ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is true of all simple machines? Work input > work output Both A & B None of these These make work easier Work input > work output Both A & B None of these These make work easier ANSWER DOWNLOAD EXAMIANS APP
Physics The speed of light in air is 8 × 103 m/s Infinity 3 × 108 m/s 3 × 10–8 m/s 8 × 103 m/s Infinity 3 × 108 m/s 3 × 10–8 m/s ANSWER DOWNLOAD EXAMIANS APP
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