ECAT Pre Engineering Physics Chapter 4 online mcq test with answers for chapter 4 (Work and Energy)

Physics ECAT Pre Engineering Chapter 4 Work and Energy Online Test

Sr. #	Questions	Answers Choice
1	Work done is independent of path followed in _______	Gravitational field Magnetic field Electric field All of these
2	Work done on a body by gravity in lifting it up to certain height is	Maximum Minimum Zero Negative
3	The space around the earth in which its gravitational force acts on a body is called	Electric Field Gravitational field Magnetic field Conservative field
4	The unit of work in CGS system is	Joule Erg Dyne Watt
5	1 J = ________?	10<sup>7</sup>erges 10<sup>-7</sup>erges 10<sup>5</sup>erges 10<sup>-5</sup>erges
6	If one newton force acts on a body and displaces the body through 1m work done on body is	1 dyne 1 joule 1KJ 1 Watt
7	The dimensions of work	[MLT<sup>-1</sup>] [MLT<sup>-2</sup>] [ML<sup>2</sup>T<sup>-2</sup>] [MLT]
8	Area under the force displacement graph gives	Power Work Heat Energy
9	SI Unit of work is	Nm<sup>-1</sup> Joule Nms Both a and b
10	Work done by the force of friction is always	Positive Zero Negative Maximum
11	When force and displacement are perpendicular to each other than work is equal to	Unity Infinity Zero -Fd
12	Maximum work is done when force and displacement are	Parallel Antiparallel Perpendicular Both a and b
13	Work is a Quantity	Vector Scalar Non-physical None of these
14	Work is a scalar product of	Force, Velocity Velocity, Displacement Force, Displacement Force, Momentum