[{"id":15508,"question":"What remains constant when the earth revolves around the sun?","choices":[{"text":"Angular momentum","value":"A"},{"text":"Linear momentum","value":"B"},{"text":"Angular kinetic energy","value":"C"},{"text":"Linear kinetic energy","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15507,"question":"What remains constant in the field of central force?","choices":[{"text":"Potential energy","value":"A"},{"text":"Kinetic energy","value":"B"},{"text":"Angular momentum","value":"C"},{"text":"Linear momentum","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":15506,"question":"Angular momentum is","choices":[{"text":"Vector (axial)","value":"A"},{"text":"Vector (polar)","value":"B"},{"text":"Scalar","value":"C"},{"text":"None of these","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15505,"question":"A body moving in circular motion with constant speed has","choices":[{"text":"Constant velocity","value":"A"},{"text":"Constant acceleration","value":"B"},{"text":"Constant kinetic energy","value":"C"},{"text":"Constant displacement","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":15504,"question":"A 2 kg body and a 3 kg body have equal momentum if the kinetic energy of 3 kg body is 10 j, the KE of 2 kg body will be","choices":[{"text":"6.66 j","value":"A"},{"text":"15 j","value":"B"},{"text":"22.5 j","value":"C"},{"text":"45 j","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15503,"question":"<span style=\"font-size: 14.44444465637207px;\">A particle moves along a circular path under the action of a force. The work done by the force is</span>","choices":[{"text":"<span style=\"font-size: 14.44444465637207px;\">Zero</span>","value":"A"},{"text":"<span style=\"font-size: 14.44444465637207px;\">Positive and non-zero</span>","value":"B"},{"text":"<span style=\"font-size: 14.44444465637207px;\">Negative and non zero</span>","value":"C"},{"text":"<span style=\"font-size: 14.44444465637207px;\">None of above</span>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15502,"question":"A man pushes a wall but fails to displace it. He does:","choices":[{"text":"Negative work","value":"A"},{"text":"Maximum positive work","value":"B"},{"text":"Positive work but not maximum","value":"C"},{"text":"No work","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":15501,"question":"A bullet is short from a rifle. As a result the rifle recoils, The kinetic energy of rifle as compared to that of bullet is","choices":[{"text":"Less","value":"A"},{"text":"Greater","value":"B"},{"text":"Equal","value":"C"},{"text":"Cannot be concluded","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":15500,"question":"How much water a pump of 2kW can raise in one minute to a height of 10 m. take g = 10 m/s<sup>2</sup>?","choices":[{"text":"1000 liters","value":"A"},{"text":"1200 liters","value":"B"},{"text":"100 liters","value":"C"},{"text":"2000 liters","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":15499,"question":"Two bodies with masses M<sub>A</sub> and M<sub>B</sub> are moving with equal kinetic energy.Their linear moments are numerically in a ratio | P<sub>A</sub>| : |P<sub>B</sub>| will be:","choices":[{"text":"&nbsp;<span style=\"font-size: 14.44444465637207px;\">M</span><sub>B&nbsp;</sub>:&nbsp;<span style=\"font-size: 14.44444465637207px;\">M</span><sub>A</sub>","value":"A"},{"text":"<span style=\"font-size: 14.44444465637207px;\">M</span><sub>A&nbsp;</sub>:&nbsp;<span style=\"font-size: 14.44444465637207px;\">M</span><sub>B</sub>","value":"B"},{"text":"√<span style=\"font-size: 14.44444465637207px;\">M</span><sub>A</sub>&nbsp;:&nbsp;√<span style=\"font-size: 14.44444465637207px;\">M</span><sub>B</sub>","value":"C"},{"text":"<span style=\"font-size: 14.44444465637207px;\">M</span><sub>A</sub><sup>2</sup><sub>&nbsp; </sub>:&nbsp;<span style=\"font-size: 14.44444465637207px;\">M</span><sub>B</sub><sup>2</sup>","value":"D"},{"value":"E"}],"correctAnswer":3}]