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 The work done by a force keeping an object in circular motion with constant speed is: Zero J. 0.1 J 1 J 0.01 J
2 Which force is not a conservative force: Frictional force Gravitational force Electric force Elastic spring force
3 A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:` Minimum work <div>Maximum work</div> Zero work Negative work
4 A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the 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>
5 A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the 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
6 The total work done in moving the body up and then down through the same height in a gravitational field is equal to: mgh Its wight Weight X height Zero
7 When the body is moves against the force of friction on a horizontal plane, the work done by the body is: Positive Negative Zero None of these
8 In the force applied is parallel to the direction of motion, then work done is: Maximum Minimum Zero None of these
9 A two Kg block is held 1 m above the floor for 50 seconds, the work done is: Zero 10.2 J 100 J 980 J
10 Work done is lowering the bucket into the well is: Zero Positive Negative None of these
11 The angle between centripetal force and displacement of the body moving in a circle 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
12 Tick the conservation force: Tension in a string Air resistance force Elastic spring Frictional force
13 The work done moving a body between two points in a conservation field is independent of the: Direction Force applied Path followed by the body ` Power
14 The field in which work done in moving a body between two points depends upon the path followed is called: Conservative field Non-conservative field Electric field None of these
15 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 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>
16 The space around the earth within it exerts a force of attraction on other bodies of known as: Nuclear field Conservative field Electric field Gravitational field
17 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
18 Work has the dimension as that of: Torque Angular momentum Linear momentum Power
19 If force and displacement are in opposite direction, the work done is taken as: Positive work Negative work Zero work Infinite work
20 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
21 Work is always done on a body when: A force acts on it It moves through certain distance None of A or B is correct Both A and B is correct
22 Work is a: Scalar quantity Vector quantity Base quantity None of these
23 The time rate of change of displacement is called: Time Acceleration Speed Velocity
24 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
25 Force is a: Scalar quantity Base quantity Derived quantity None of these
26 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
27 Bodies which falls freely under gravity provides good example of motion under: Uniform acceleration Non-uniform acceleration Uniform velocity None of these
28
Swimming becomes possible because of______law of motion:		 First Second Third None of these
29 A dirty carpet is to be cleaned by heating. This is an accordance with____ law of motion: First Second Third None of these
30 A certain force gives an acceleration of 2 m/sec2 to a body if mass 5 kg. The same force would give a 29 kg object an acceleration of: 0.5 m/sec2 5 m/sec2 1.5 m/sec2 9.8 m/sec2
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