ECAT Physics Chapter 4 Work and Energy Online Test With Answers

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ECAT Physics Chapter 4 Work and Energy Online Test

Sr. # Questions Answers Choice
1 Work is a: Scalar quantity Vector quantity Base quantity None of these
2 Tick the conservative force Tension in a string Air resistance Elastic spring Frictional force
3 A field in which the work done in moving a body along closed path is zero is called Nuclear Field Conservative field Gravitational field Non-conservative field
4 When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is 0.5 J 2 J 0.25 J 1 J
5 The work done in moving a body between two points in a conservative field is independent of the Direction Force applied Path followed by the body Power
6 Which of the following types of force can do no work on the particle on which it acts Frictional force Gravitational force Electric force Centripetal force
7 A body moves a distance of 10 m along a straight line under the action of a force of 5 N and work done in 25J. The angle which the force makes with the direction of motion will be 60° 90° 30° 0°
8 The Space around the Earth within which it exerts a force of attraction on other bodies is known as Nuclear field Conservative field Electric field Gravitational field
9 Work done is maximum when angle between force and displacement is 0° 90° 180° None of these
10 Work has the dimensions as that of Torque Angular momentum Linear momentum Power
11 If force and displacement are in opposite direction, the work done is taken as Positive work Negative work Zero work Infinite work
12 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
13 Work is a 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 are correct
14 Work is a Scalar quantity Vector quantity Base quantity None of these
15 Which one is conservative force Electric force Frictional force Normal force Air resistance
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