Physics ECAT Pre Engineering MCQ's Test For Full Book With Answers

Physics ECAT Pre Engineering MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which of the following type of force can do no work on the particle on which it acts: Frictional force Gravitational force Electric force Centripetal force
2 The field in which work done is moving body between two points depends upon the path followed is called: Conservative filed Non-conservative field Electric field None of these
3 Work done along a closed path in a gravitational field is: Maximum Minimum Zero Unity
4 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done is 25J. the angle which the force makes with the direction of motion will be: 60<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> 90<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> 30<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> 0<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>
5 The space around the earth within which it expects a force of attraction on other bodies is known as: Nuclear field Conservative field Electric field Gravitational field
6 Work done is maximum when angle between force and displacement is: 0<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> 90<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> 180<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> None of these
7 Work has a dimension as that of: Torque Angular momentum Linear momentum Power
8 If force and displacement are in opposite direction, the work done is taken as: Positive work Negative work Zero work Infinte work
9 The work performed on an object does not depend on: Force applied Angle at which force is inclined to the displacement Initial velocity of the object Displacement
10 Work is always done on a body when: A force acts on it It moves through certain distance None of A and B is correct Both A and B is correct
11 Work is a: Scalar quantity Vector quantity Base quantity None of these
12 One newton is a force that produces an acceleration of 0.5 m/sec2in a body of mass: 2 Kg 3 Kg 4 Kg 8 Kg
13 Force is a: Scalar quantity Base quantity Derived quantity None of these
14 An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is: 100 m/sec 140 m/sec 1960 m/sec 196 m/sec
15 Body which falls freely under gravity provides good example of motion under: Uniform acceleration Non-uniform acceleration Uniform velocity None of these
16 Swimming becomes possible because of______law of motion. First Second Third None of these
17 A dirty carpet is to be cleaned by heating. This is in according with______law of motion. First Second Third None of these
18 A certain force gives an acceleration of 2 m/sec2to a body mass 5 kg. The same force would give a 20 kg object an acceleration of: 0.5 m/sec<sup>2</sup> 5 m/sec<sup>2</sup> 1.5 m/sec<sup>2</sup> 9.8 m/sec<sup>2</sup>
19 Slope of velocity time graph represents: Acceleration Speed Torque Work
20 In above figures, tell which set of graphs shows that a body is moving with uniform velocity: (i) and (ii) (ii) and (iii) (iii) and (iv)
21 If the velocity time graph is a straight line parallel to the time-axis, then it means: The body is moving with uniform velocity The body is moving with uniform acceleration The body is at rest None of these
22 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
23 The magnitude of the force producing an acceleration of 10 m/sec2in a body of mass 500 grams is: 3 N 4 N 5 N 6 N
24 A body is moving with constant velocity of 10 m/sec in the north-east direction. Then its acceleration will be: 10 m/sec<sup>2</sup> 20 m/sec<sup>2</sup> 30 m/sec<sup>2</sup> Zero
25 A body of mass 5 kg is acted upon by a constant force of 20 n for 7 seconds. The total change in momentum will be: 10 NS 100 NS 140 NS 200 NS
26 When brakes are applied to a fast moving car, the passenger will be thrown: Forward Backward Downward none of these
27 Which one of the following is dimensionless: Acceleration Velocity Density Angle
28 The dimension of linear inertia is: MLT<sup>2</sup> ML<sup>0</sup>T<sup>-2</sup> ML<sup>0</sup>T<sup>0</sup> MLT<sup>-1</sup>
29 A ball is dropped from a height of 4.2 meters. To what height it will rise if there is no loss of KE after rebounding? 4.2 m 8.4 12.6 None of these
30 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
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