XI Physics Work Power And Energy Online Test Mdcat-2024

XI Physics Work Power And Energy online test
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Instructions for Chapter Work Power And Energy Online Test Mdcat-2024:

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    Test Details:

      • Subject: Physics
      • Class: 1st year or 11
      • Chapter name: Work Power And Energy
      • Test: MDCAT 2024
      • Book: Sindh Textbook
      • Total No. Of MCQS: 50
      • Time Allowed: 60 Minutes
      • Price : Free
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      XI Physics Work Power and Energy Online Test Mdcat-2024

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      1 / 50

      1. Power is defined as:

      2 / 50

      2. Two bodies of masses m₁, and m₂ have equal momentum their kinetic energies E₁ and E₂ are in the ratio:

      3 / 50

      3. The kinetic energy of a body becomes four times it initial value. The new linear momentum will be:

      4 / 50

      4. Which of the following is incorrect?

      5 / 50

      5. When calculating work done by a variable force, the accuracy of the result increases, if:

      6 / 50

      6. If a lighter body (mass M₁ and velocity V₁) and a heavier body (mass M₂ and velocity V₂) have the same kinetic energy, then

      7 / 50

      7. A force of 10 N is applied to push a block horizontally over a distance of 5 meters. How much work is done by the force?

      8 / 50

      8. The power of a pump, which can pump 200 kg of water to a height of 200 m in 10 sec is:

      9 / 50

      9. A car accelerates uniformly from rest to a velocity of 20 m/s in 10 seconds. If the mass of the car is 1500 kg, what is the kinetic energy of the car at the end of 10 seconds?

      10 / 50

      10. A crane lifts a 500 kg load to a height of 20 meters in 25 seconds. What is the average power output of the crane? (Assume g = 9.8 m/s²)

      11 / 50

      11. A 60 W light bulb is used for 2 hours. How much energy does it consume in joules?

      12 / 50

      12. Which of the following reactions emit more energy when performed at an equal rate?

      13 / 50

      13. Work done against gravitational force is stored as:

      14 / 50

      14. Work done by a conservative force would be positive if:

      15 / 50

      15. Energy required to accelerate a car from 10 m/s to 20 m/s compared with that required to accelerate it from 0 m/s to 10 m/s is:

      16 / 50

      16. A body of mass 2 kg is moving with a momentum of 2 Ns. Its kinetic energy would be:

      17 / 50

      17. The time taken by an engine of power 10 kW to lift a mass of 200 kg to a height of 40 meters is:

      18 / 50

      18. A light body A and a heavy body B have equal kinetic energy. Then:

      19 / 50

      19. Work done would be half of the maximum at the angle of:

      20 / 50

      20. If all the parametric expressions of kinetic energy are doubled, then the KE would be:

      21 / 50

      21. An object possesses a KE that is numerically to its momentum. The speed of the object is:

      22 / 50

      22. Car X is traveling at half the speed of car Y. Car X has twice the mass of car Y. Which statement is correct?

      23 / 50

      23. If the linear momentum of a body is increased by 14%, its kinetic energy increases by:

      24 / 50

      24. What is the difference between kinetic energy and potential energy?

      25 / 50

      25. What is the difference between work and energy?

      26 / 50

      26. An object has a kinetic energy of 8 J. What is its velocity if its mass is 4 kg?

      27 / 50

      27. What is the main relationship between power and energy?

      28 / 50

      28. What is the difference between instantaneous power and average power?

      29 / 50

      29. A stone is thrown up from the surface of the earth. When it reaches its maximum height, its K.E. is equal to:

      30 / 50

      30. The input power to a motor is 1000 W. In 10 seconds, it lifts a load of 500 N through a height of 5.0 m. What is the efficiency of the motor?

      31 / 50

      31. The relation between horsepower and watt is:

      32 / 50

      32. A worker takes 2 minutes to raise a box from the platform to a train. Another worker takes 1 minute. The work done:

      33 / 50

      33. Which of the following is correct?

      34 / 50

      34. If a body falls from a height, the relation between its kinetic and potential energies is:

      35 / 50

      35. The work done in a gravitational field is independent of:

      36 / 50

      36. 1 British Thermal Unit is equal to:

      37 / 50

      37. A stair that is 10m high contains 25 steps. How much work is needed per step while lifting a 50 kg body?

      38 / 50

      38. Which of the following forces acting on a body always performs zero work:

      39 / 50

      39. A 50 kg car is moving along a road with a speed of 72 km/h. How much work is done by frictional force if the speed of the car is reduced to 36 km/h?

      40 / 50

      40. Five bricks, each 10 cm thick and mass 1 kg, lie flat on table. How much work is required to stack them one on top of another (g = 10 m/s²)?

      41 / 50

      41. A boy holds a box of weight 100N, 5 meters above from the ground. The work done by boy is:

      42 / 50

      42. The work done on a particle is equal to the change in its:

      43 / 50

      43. Work done by gravitational force and lifting force on a body being lifted upward is:

      44 / 50

      44. Which of the following is/are the example of positive work?

      I. work done by stretching force while stretching the spring.
      II. work done by lifting force to lift body upward.
      III. Work done by gravity when a body moves downward.
      IV. Work done by normal reaction when body moves on a horizontally on surface.

      45 / 50

      45. When a falling body hits the earth, its kinetic energy changes to:

      46 / 50

      46. If a car is moving on a straight road with constant speed, then:

      47 / 50

      47. When two protons are brought closer:

      48 / 50

      48. According to the work-energy principle, work done on a body is equal to:

      49 / 50

      49. A body of mass 5 Kg initially at rest is moved by a force of 20 N on a smooth horizontal surface. Work done by the force in 10 sec is:

      50 / 50

      50. What is the force required to accelerate an object of mass 1 Kg from rest to a velocity of 4 m/s in the distance of 10 m:

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