[{"id":121808,"question":"To get a resultant displacement of 10 m, two displacement vectors of magnitude 6 m and 8 m should be combined","choices":[{"text":"Parallel","value":"A"},{"text":"Antiparallel","value":"B"},{"text":"At angle 60<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"C"},{"text":"Perpendicular to each other","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":119438,"question":"The time of flight of a projectile motion equal to","choices":[{"text":"half of the time to reach maximum height","value":"A"},{"text":"twice the time to reach maximum height","value":"B"},{"text":"one fourth of time to reach maximum height","value":"C"},{"text":"time to reach maximum height","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119437,"question":"For maximum linear distance of travel, a projectile must be fired at an angle of","choices":[{"text":"0<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"A"},{"text":"45<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"B"},{"text":"90<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"C"},{"text":"60<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119435,"question":"The velocity of a projectile is maximum","choices":[{"text":"at the point of projection","value":"A"},{"text":"just before striking the ground","value":"B"},{"text":"at none of them","value":"C"},{"text":"at both of them","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":119433,"question":"The vertical and horizontal range will be equal id angle of projection is","choices":[{"text":"76<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"A"},{"text":"45<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"B"},{"text":"60<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"C"},{"text":"120<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119432,"question":"The projectile attains maximum horizontal range when it is projected at an angle of","choices":[{"text":"30<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"A"},{"text":"45<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"B"},{"text":"60<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"C"},{"text":"75<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">°</span>","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119431,"question":"The horizontal range of projectile, at a certain place, depends upon","choices":[{"text":"the mass of the projectile","value":"A"},{"text":"velocity of projection","value":"B"},{"text":"angle of projection","value":"C"},{"text":"angle as well as velocity of projection","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":119430,"question":"A particle of mass 0.5 g moving along x-axis is located of x<sub>1</sub>= 15 m at t<sub>1</sub>= 5s and x<sub>2</sub>= 33 m at t<sub>2</sub>= 13s its average velocity is","choices":[{"text":"6 m s<sup>-1</sup>","value":"A"},{"text":"2.45 m s<sup>-1</sup>","value":"B"},{"text":"2.25 m s<sup>-1</sup>","value":"C"},{"text":"4.45 m s<sup>-1</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119429,"question":"The horizontal component of a projectile moving with initial velocity of 500 ms<sup>-1</sup>at an angle 60<span style=\"color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;\">° to x-axis is</span>","choices":[{"text":"500 ms<sup>-1</sup>","value":"A"},{"text":"1000 ms<sup>-1</sup>","value":"B"},{"text":"250 ms<sup>-1</sup>","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119428,"question":"The vertical component of velocity of a projectile during its motion is minimum","choices":[{"text":"at the time of projection","value":"A"},{"text":"at the highest point","value":"B"},{"text":"just before hitting the plane of projection","value":"C"},{"text":"all of them","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":119426,"question":"During the projectile motion, the horizontal component of velocity","choices":[{"text":"changes with time","value":"A"},{"text":"remains constant","value":"B"},{"text":"becomes zero","value":"C"},{"text":"decreases with time","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119399,"question":"The projectile motion is composed of","choices":[{"text":"horizontal motion only","value":"A"},{"text":"vertical motion only","value":"B"},{"text":"horizontal and vertical motion","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":119398,"question":"The path (or trajectory) described by a projectile is","choices":[{"text":"a parabola","value":"A"},{"text":"a hyperbola","value":"B"},{"text":"a circle","value":"C"},{"text":"a straight line","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":119396,"question":"The path described by a projectile is called its","choices":[{"text":"orbit","value":"A"},{"text":"trajectory","value":"B"},{"text":"range","value":"C"},{"text":"distance","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":119393,"question":"Which of the following is not a projectile","choices":[{"text":"a bullet fired from a gun","value":"A"},{"text":"a space ship","value":"B"},{"text":"a football in air","value":"C"},{"text":"an artillery shell","value":"D"},{"value":"E"}],"correctAnswer":2}]