CH-4 Work & Energy Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-4 Work & Energy" Click on "Start Quiz" To Continue... 1. A slope of work time graph is equal to: Displacement Acceleration Power Energy None 2. Work done will be maximum if the angle between the force (F) and displacement (d) is: 45⁰ 90⁰ 180⁰ 0⁰ None 3. Work has the dimensions as that of same as: Torque Angular momentum Linear momentum Power None 4. Work is the product of: Force and distance Force and displacement Force and velocity Force and energy None 5. The work done will be negative when force and displacement are: In opposite direction Same direction Perpendicular None None 6. The area under force displacement curve gives: Energy Work Momentum Torque None 7. The work done is independent of: Path followed by the body Force Gravity Conservative field None 8. Work is defined as _____ of force and displacement: Vector product Scaler product Both None None 9. A field in which work done is independent of the path followed is called: Electric field Gravitational field Magnetic field Conservative field None 10. Work is a: Scalar quantity Vector quantity Both None None 11. Which of the following force can do no work on the body when it acts: Elastic force Centripetal force Frictional force Gravitational force None 12. If a body of weight (w) is lifted through a height (h) then work done will be: wh Zero wh sin O – wh None 13. The rate of doing work is called: Work Force Momentum Power None 14. One horse power is equal to: 746 Watt 745 Watt 750 Watt 775 Watt None 15. In British engineering system, the unit of power is: Joule Watt Horse power Kilowatt horse None 16. 1 kwh is equal to: 3.6 x 10⁵ J 36 x 10⁵ J 3.6 x 10⁶ J 3.5 x 10⁵ J None 17. Work is always on a body when: It moves through a certain distance It experiences a force while in motion A force is exerted on it None None 18. If an agent consumes a power of 1 kilowatt in one hour the work done is: One Watt One Kilo-watt One Kilo-watt hour None None 19. The energy possessed by the body due to its motion is: Kinetic energy Potential energy Chemical energy None None 20. The energy possessed by the body due to its position is: Kinetic energy Potential energy Chemical energy None None 21. The expression for potential energy is: P.E = mgh² P.E = 1/2 mgh P.E = mgh P.E = m²gh None 22. The unit of potential energy is same as that: Work Force Momentum Power None 23. Body of mass 5 kg moving with a velocity of 2 m/s then its K.E is: 20 J 5 J 10 J 15 J None 24. The potential energy of an object on the surface of earth is: 1/2 mv² mgh 2mg Zero None 25. The work done on a body from earth surface to infinity appears as: Elastic potential energy Absolute P.E Zero P.E Maximum P.E None 26. The absolute potential energy is measured from the: Centre of earth Surface of Earth Near to Earth Infinity None 27. Energy possessed by body due to its special configuration is called: Electrostatic energy Gravitational potential energy Elastic potential energy None None 28. The energy of waves can be used to generate: Magnetic effect Electricity Solar energy Geothermal energy None 29. What is the work done in kilo joules in lifting a man of 10 kg through a vertical height of 10 m: 9.8 kJ 980 kJ 0.98 kJ 98 kJ None 30. The tidal energy is due to the gravitational pull of: Sun Planet Mars Moon None 31. Which one is the biggest unit of energy: Erg Joule Kilowatt hour Watt hour None 32. The average power and instantaneous power becomes equal if work is done at: At any rate At variable rate At uniform rate At high rate None 33. If mass of a moving object is doubled its kinetic energy becomes: 2 times 4 times 5 times 16 times None 34. One Kilo-watt hour of work is equal to: 0.36 MJ 3.6 MJ 36 MJ 360 MJ None 35. The work done by the force of 10 Newton applied parallel to the direction of motion up to 20 m: 10 J 20 J 200 J 2000 J None 36. The tide raise the matter in the sea roughly in a day: Once Twice Four Times Eight Times None 37. One dyne is equal to: 10³ N 10⁵ N 10⁸ N 10² N None 38. The escape velocity of a body depends upon: The mass of the body The mass of the planet Density of the planet Volume of the planet None 39. Which of the following is not a biomass: Crop residue Animal drug Coal Sewage None 40. The K.E of a body of mass 2 kg and momentum 2 Ns is: 1 J 2 J 3 J 4 J None 1 out of 8 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
