[{"id":110369,"question":"At the starting point of the free fall motion of an object, its acceleration will be","choices":[{"text":"maximum","value":"A"},{"text":"minimum","value":"B"},{"text":"zero","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":110363,"question":"The body will move with terminal velocity when it acquires","choices":[{"text":"minimum speed","value":"A"},{"text":"zero speed","value":"B"},{"text":"maximum speed","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110361,"question":"During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with ","choices":[{"text":"maximum speed","value":"A"},{"text":"zero speed","value":"B"},{"text":"maximum speed","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110358,"question":"When weight of an object falling freely becomes equal to the drag force, then the body will move with","choices":[{"text":"increasing speed","value":"A"},{"text":"decreasing speed","value":"B"},{"text":"constant speed","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110356,"question":"When a water droplet falls through air, the net force on it is","choices":[{"text":"Net force = drag force - weight","value":"A"},{"text":"Net force = weight - drag force","value":"B"},{"text":"Net force = drag force + weight","value":"C"},{"text":"Net force = weight + drag force","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110354,"question":"When a water droplet falling freely through air, the drag force on water droplet increases with th","choices":[{"text":"decrease in speed","value":"A"},{"text":"increase in speed","value":"B"},{"text":"pressure","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110353,"question":"At low speeds, the drag force is","choices":[{"text":"proportional to speed","value":"A"},{"text":"inversely proportional to speed","value":"B"},{"text":"not simply proportional to speed","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110351,"question":"The maximum drag force on a falling sphere is 9.8 N, it weight is","choices":[{"text":"1 N","value":"A"},{"text":"9.8 N","value":"B"},{"text":"4.9 N","value":"C"},{"text":"Cannot be calculated","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110349,"question":"According to slok's law, drag force depends on","choices":[{"text":"Radius of the spherical body","value":"A"},{"text":"Terminal velocity of body","value":"B"},{"text":"Coefficient of viscosity","value":"C"},{"text":"All of above","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110347,"question":"When the speed of a body in a fluid increases then the drag force","choices":[{"text":"decreases","value":"A"},{"text":"becomes zero","value":"B"},{"text":"increases","value":"C"},{"text":"non of them","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110346,"question":"An object moving through a fluid experiences a retarding force called a","choices":[{"text":"frictional force","value":"A"},{"text":"terminal force","value":"B"},{"text":"opposing force","value":"C"},{"text":"drag force","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110344,"question":"Liquids and gasses have","choices":[{"text":"zero viscosity","value":"A"},{"text":"non-zero viscosity","value":"B"},{"text":"very large viscosity","value":"C"},{"text":"very small viscosity","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110342,"question":"Substances that flow easily have","choices":[{"text":"large coefficient of viscosity","value":"A"},{"text":"small coefficient of viscosity","value":"B"},{"text":"either of them","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110341,"question":"Substances that do not flow easily have","choices":[{"text":"large coefficient of viscosity","value":"A"},{"text":"small coefficient of viscosity","value":"B"},{"text":"either of them","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":110339,"question":"How much force is required to slide one layer of the liquid over the other layer is measured by","choices":[{"text":"friction","value":"A"},{"text":"density","value":"B"},{"text":"viscosity","value":"C"},{"text":"resistivity","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":110338,"question":"The effect of friction between different layers of a flowing fluid is described in terms of","choices":[{"text":"motion of fluid","value":"A"},{"text":"nature of fluid","value":"B"},{"text":"colour of fluid","value":"C"},{"text":"viscosity of fluid","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":110336,"question":"The law of conservation of energy gives us","choices":[{"text":"equation of continuity","value":"A"},{"text":"Bernoulli's theorem","value":"B"},{"text":"both of them","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":110334,"question":"The law of conservation of mass gives us the","choices":[{"text":"equation of continuity","value":"A"},{"text":"Bernoulli's theorem","value":"B"},{"text":"both of them","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":110332,"question":"The analysis of fluid motion becomes simplified by using","choices":[{"text":"law of conservation","value":"A"},{"text":"law of conservation of energy","value":"B"},{"text":"both of them","value":"C"},{"text":"none of them","value":"D"},{"value":"E"}],"correctAnswer":3}]