ECAT Pre General Science Online Test With Answers

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ECAT Pre General Science Online Test

Sr. # Questions Answers Choice
1 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is: 1.25 J 12.5 J 125 J None of these
2 If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents: Power Work Pressure None of these
3 The work done by a force, keeping an object in circular motion with constant speed is: Zero J 1 J 0.1 J 0.01 J
4 Which force is not a conservative force? Frictional force Gravitational force Electric force Elastic spring force
5 A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done: Minimum Work Maximum Work Zero Work Negative Work
6 A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which force makes with the direction of motion of a body 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> 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> 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>
7 A 100 kg car is moving at a speed of 10 m/sec and comes to rest after covering a distance of 50 m. the amount of work done against friction is: +5 x 10<sup>1</sup>J +5 x 10<sup>2</sup>J +5 x 10<sup>3</sup>J +5 x 10<sup>4</sup>J
8 When a body moves against the force of friction on a horizontal plane, the work done by the body is: Positive Negative Zero None of these
9 In the force applied to parallel to the direction of motion, then the work done is: Positive Negative Zero None of these
10 A 2 kg block is held 1 m above floor for 50 seconds. The work done is: Zero 10.2 J 100 J 980 J
11 Work done in lower and bucket into the well is: Zero Positive Negative None of these
12 A field in which the work done is moving a body along closed path is zero is called: Nuclear filed Conservative field Gravitational field Non-conservative field
13 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is: 2 J 0.25 J 1 J 0.5 J
14 The work done in moving a body between two points in a conservation field is independent of the: Direction Force applied Path followed by the body Power
15 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
16 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
17 Work done along a closed path in a gravitational field is: Maximum Minimum Zero Unity
18 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>
19 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
20 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
21 Work has a dimension as that of: Torque Angular momentum Linear momentum Power
22 If force and displacement are in opposite direction, the work done is taken as: Positive work Negative work Zero work Infinte work
23 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
24 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
25 Work is a: Scalar quantity Vector quantity Base quantity None of these
26 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
27 Force is a: Scalar quantity Base quantity Derived quantity None of these
28 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
29 Body which falls freely under gravity provides good example of motion under: Uniform acceleration Non-uniform acceleration Uniform velocity None of these
30 Swimming becomes possible because of______law of motion. First Second Third None of these
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