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 amount of coal used since 1945 up till now as compared to that used in the whole of history before that is	A. Much more B. Very small C. No amount at all D. None of these
2	A field in which the work done in moving a body along closed path is zero is called	A. Nuclear Field B. Conservative field C. Gravitational field D. Non-conservative field
3	The dimensions of work	A. [MLT^-1] B. [MLT^-2] C. [ML²T^-2] D. [MLT]
4	Work is product of:	A. Force and velocity B. Heat and energy C. Force and displacement D. None of these
5	The field in which work done in moving a body between two points depends upon the path followed is called:	A. Conservative field B. Non-conservative field C. Electric field D. None of these
6	The commercial unit of electrical energy is :	A. K Watt B. KWH C. Horse power D. Joule
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	A. 60° B. 90° C. 30° D. 0°
8	The work done by a force, keeping an object in circular motion with constant speed is:	A. Zero J B. 1 J C. 0.1 J D. 0.01 J
9	Which one is conservative force	A. Electric force B. Frictional force C. Normal force D. Air resistance
10	If force and displacement are in opposite direction, the work done is taken as	A. Positive work B. Negative work C. Zero work D. Infinite work