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 When a falling body hits ground, its KE changes to _____ energy. Potential Chemical Mechanical sound and heat
2 The commercial unit of electrical energy is : K Watt KWH Horse power Joule
3 The types of mechanical energy is/are: Kinetic energy Potential energy Both of these None of these
4 Escape velocity from surface of Moon as compared to that from Earth surface is: Greater Smaller Equal None of thes
5 When two protons are brought are brought closer potential energy of both of them: Increases Decreases Remains same None of these
6 The energy stored int he water of the dam is: Electric energy Kinetic energy Potential energy None of these
7 Work-energy principle states that work done on the body by applied force is equal to change in: Potential energy Kinetic nergy Linear momentum None of these
8 When velocity of moving body is doubled, the quantity which is also doubled is its: K.E. Acceleration Momentum P.E.
9 Energy stored in the spring of a watch is called Potential energy Kinetic energy Nuclear energy Elastic potential
10 Work is product of: Force and velocity Heat and energy Force and displacement None of these
11 A boy pulls a toy car through a distance of 5 m by applying a force of 0.5 N, Which makes an angle of 60° with the horizontal. The work done by the boy is: 1.25 J 12.5 J 125 J None of these
12 If we draw a graph between d(along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis then area under this straight line represents: Power Work Pressure None of these
13 The work done by a force, keeping an object in circular motion with constant speed is: Zero J 1 J 0.1 J 0.01 J
14 Which force is not a conservative force? Frictional force Gravitational force Electric force Elastic spring force
15 A laborer carrying a load on his head moves from the rest on a horizontal road to another point where he comes to rest. He has done: Minimum Work Maximum Work Zero Work Negative Work
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