[{"id":121867,"question":"A ball is dropped downwards After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds","choices":[{"text":"25 m","value":"A"},{"text":"20 m","value":"B"},{"text":"50 m","value":"C"},{"text":"9.8 m","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":121866,"question":"If a train traveling at 72 kmph is to be brought to rest in a distance of 200 meters then its retardation should be","choices":[{"text":"20 ms<sup>-2</sup>","value":"A"},{"text":"10 ms<sup>-2</sup>","value":"B"},{"text":"2 ms<sup>-2</sup>","value":"C"},{"text":"1 ms<sup>-2</sup>","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":121865,"question":"A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is","choices":[{"text":"37.5 km/h","value":"A"},{"text":"10 km/h","value":"B"},{"text":"42 km/h","value":"C"},{"text":"40 km/h","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":121864,"question":"If an iron ball and a wooden ball of the same radius was released from a height 'h' in vacuum, then time taken by both of them to reach ground will be","choices":[{"text":"Unequal","value":"A"},{"text":"Exactly equal","value":"B"},{"text":"Roughly equal","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":121863,"question":"A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of","choices":[{"text":"3 s","value":"A"},{"text":"5 s","value":"B"},{"text":"7 s","value":"C"},{"text":"9 s","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":121862,"question":"A person is sitting in a traveling train and facing the engine. He tosses up a coin and the coin falls behind him. It can be concluded that the train is","choices":[{"text":"Moving forward and gaining speed","value":"A"},{"text":"Moving forward and losing speed","value":"B"},{"text":"Moving forward with uniform speed","value":"C"},{"text":"Moving backward with uniform speed","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":121861,"question":"The mass of a body measured by a physical balance in a lift at rest is found to be m, if the lift is going up with an acceleration a, its mass will be measured as","choices":[{"text":"m (1 - a/g)","value":"A"},{"text":"m (1 + a/g)","value":"B"},{"text":"m","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":121859,"question":"A lift is moving up with acceleration equal to 1/5 of that due to gravity. The apparent weight of a 60 kg man standing in lift is","choices":[{"text":"60 kg wt","value":"A"},{"text":"72 kg wt","value":"B"},{"text":"48 kg wt","value":"C"},{"text":"Zero","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":121857,"question":"A monkey sits on the pan of spring scale kept in an elevator. The reading of the spring scale will be maximum when","choices":[{"text":"Elevator is stationary","value":"A"},{"text":"Elevator cable breaks and it falls freely towards earth","value":"B"},{"text":"Elevator accelerates downwards","value":"C"},{"text":"Elevator accelerates upward","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":121852,"question":"A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be","choices":[{"text":"Zero","value":"A"},{"text":"g","value":"B"},{"text":"-g","value":"C"},{"text":"V + g","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":121851,"question":"A vehicle of mass 120 kg is moving with a uniform velocity of 108 km/h. The force required to stop the vehicle in 10s is","choices":[{"text":"120 x 10.8 N","value":"A"},{"text":"180 N","value":"B"},{"text":"720 N","value":"C"},{"text":"360 N","value":"D"},{"value":"E"}],"correctAnswer":4},{"id":121850,"question":"Essential characteristic of equilibrium is","choices":[{"text":"Momentum equal to zero","value":"A"},{"text":"Acceleration equal to zero","value":"B"},{"text":"Kinetic energy equal to zero","value":"C"},{"text":"Velocity equal to zero","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":121849,"question":"If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of","choices":[{"text":"20 m","value":"A"},{"text":"400 m","value":"B"},{"text":"1440 m","value":"C"},{"text":"2880 m","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":121842,"question":"A ball falls on the surface from 10 m height and rebounds to 2.5 m. if the duration of contact with the floor is 0.01 seconds then the average acceleration during contact is","choices":[{"text":"2100 m/s<sup>2</sup>","value":"A"},{"text":"1400 m/s<sup>2</sup>","value":"B"},{"text":"700 m/s<sup>2</sup>","value":"C"},{"text":"400 m/s<sup>2</sup>","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":121840,"question":"By which velocity a ball be projected vertically so that the distance covered by it in 5th seconds is twice the distance it covers in its 6th second ( g=10m/s<sup>2</sup>)","choices":[{"text":"58.8 m/s","value":"A"},{"text":"49 m/s","value":"B"},{"text":"65 m/s","value":"C"},{"text":"19.6 m/s","value":"D"},{"value":"E"}],"correctAnswer":3}]