ECAT Pre Computer Science Chapter 4 MCQ Test With Answer

Top Scorers Of ECAT Physics Chapter 4 Work and Energy MCQ`s Test

Sr.#	Question	Answer
1	The consumption of energy by a 60 W bulb in 2 minutes is:	A. 2 watt-hour B. 120 watt-hour C. 30 watt-hour D. None of these
2	The Space around the Earth within which it exerts a force of attraction on other bodies is known as	A. Nuclear field B. Conservative field C. Electric field D. Gravitational field
3	Area under the force displacement graph gives	A. Power B. Work C. Heat D. Energy
4	The work done moving a body between two points in a conservation field is independent of the:	A. Direction B. Force applied C. Path followed by the body ` D. Power
5	Work done in lower and bucket into the well is:	A. Zero B. Positive C. Negative D. None of these
6	When a force of 0.5 N displaces a body through a distance of 2m in the direction of force, the work done is	A. 0.5 J B. 2 J C. 0.25 J D. 1 J
7	When a wall is pushed by a person very strongly, he has done:	A. Maximum work B. Zero work C. Positive work D. Negative work
8	The types of mechanical energy is/are:	A. Kinetic energy B. Potential energy C. Both of these D. None of these
9	The work done on the body will be zero if:	A. No force is applied on the body B. Force is applied but no displacement C. Angle between F(force) and d(displacement) is 90° D. All of these are correct
10	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:	A. +5 x 10¹J B. +5 x 10²J C. +5 x 10³J D. +5 x 10⁴J