ECAT Pre General Science Physics Chapter 3 Motion and Force Online Test With Answers

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ECAT Pre General Science Physics Chapter 3 Motion and Force Online Test

Sr. # Questions Answers Choice
1 In the above figures, tell which set is graphs shows that a body is moving uniform velocity: (i) and (ii) (ii) and (iii) (i) and (iii) (ii) and (iv)
2 If the velocity time graph is a straight line parallel to time-axis, then it means that: The body is moving with uniform velocity The body is moving with uniform acceleration The body is at rest None of above
3 The magnitude of the force producing an acceleration of 10 m/sec2 in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
4 A body is moving with constant velocity of 10 m/sec in the north east direction. Then its acceleration will be: 10 m/sec2 20 m/sec2 30 m/sec2 Zero
5 A body of mass 5 kg is acted upon by a total change n momentum will be: 10 NS 100 NS 140 NS 200 NS
6 When brakes are applied to a fast moving car, the passengers will be thrown: Forward Backward Downward None of these
7 Which one of the following is dimensionless. Acceleration Velocity Density Angle
8 The dimension of linear inertia is: MLT<sup>2</sup> ML<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span><span style="font-size: 10.5pt; line-height: 107%; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">T<sup>-2</sup></span> ML<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°T</span><span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> MLT<sup>-1</sup>
9 A ball is dropped from a height of 4.2 meters. To what height will take it rise if there is no loss of KE after rebounding? 4.2 m 8.4 m 12.6 m none of these
10 A body moving with an acceleration of 5 m/sec2started with velocity of 10 m/sec. What will be the distance traversed in 10 seconds? 150 m 250 m 350 m 400 m
11 The shortest distance between two points directed from its initial point to final point is called: Velocity Displacement Speed Distance
12 Ethanol (alcohol) as a type of: Electric fuel Bio fuel Nuclear fuel None of these
13 Root out of the conventional source of energy: Energy from biomass Hydroelectric energy Geothermal energy None of these
14 Biomass includes: Crop residue Natural vegetation Animal dung All of these
15 The consumption of energy by a 1000 watt heter in half an hour is: 5 Kwh 0.5 Kwh 2.5 Kwh 3.2 Kwh
16 One KWh is equal to: 3.6 x 10<sup>2</sup>J 3.6 KJ 3.6 x 10<sup>1</sup>KJ 3.6 MJ
17 The velocity given to a body to go out of the influence of earth's gravity is known as: Terminal velocity Orbital velocity Escape velocity None of these
18 When two protons are brought closer potential energy of both of them: Increases Decreases Remains same None of these
19 A body of weight 1 N has a kinetic energy of 1 joule when its speed is: 1.46 m sec<sup>-1</sup> 2.44 m sec<sup>-1</sup> 3.42 m sec<sup>-1</sup> 4.43 m sec<sup>-1</sup>
20 Tick the conservation force: Tension in a string Air resistance string Elastic spring force Frictional force
21 Work done along a closed path in a gravitational field is: Maximum Minimum Zero Unity
22 A body whose momentum is constant must have constant Acceleration Velocity Force None of these
23 Swimming is based on the principle of Newton's 1st law Newton's 2nd law Newton's 3rd law All
24 If rope of lift breaks suddenly. The tension exerted by the surface of lift is (a=Acceleration of lift) mg m (g+a) m (g - a) 0
25 A body of mass 1.0 kg is falling with an acceleration of 10 m/s2. Its apparent weight will be (g=10 m/s2) 1.0 kg wt 2.0 kg wt 0.5 kg wt Zero
26 When a body is moving on a surface, the force of friction is called Static friction Dynamic friction Limiting friction Rolling friction
27 A railway engine (mass 104kg) is moving with a speed of 73 km/h. The force which should be applied to bring it to rest over a distance of 20 m is 3,600 N 7,200 N 10,000 N 100,000 N
28 When a horse pulls a cart, the force that makes the horse run forward is the force exerted by The horse on the ground The horse on the cart The ground on the horse The ground on the cart
29 When a bicycle is in motion, the frictional forces exerted by the ground are In the forward direction on both the wheels In the backward direction on both the wheels In the forward direction on the front wheel and the backward direction on the rear wheel In the backward direction on the front wheel and the forward direction on the rear wheel
30 In an elevator moving vertically up with an acceleration 'g' the force exerted on the floor by a passenger of mass M is Mg 1/2 Mg Zero 2 Mg
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