This post is based on Class 9 Physics Chapter 6 Notes for students. Here you can find 9th Class Physics Chapter 6 MCQs with Answers. Name of this Chapter is Work and Energy. These Multiple Choice Questions are for practice to those students who are looking for it online. Students should also visit 9th Class Physics MCQs of All Chapters. These Physics Class 9 Chapter 6 Solved MCQs have been taken from Al-Hassan Super Notes Physics (English Medium) – IX. Students should go through these Objective Type Questions before attempting exams.
Work and Energy: 9th Class Physics Chapter 6 MCQs with Answers
You may also like: 9th Physics Chapter 6 Short Questions & Numericals
1. The work by which transfer of heat takes place are:
(A) 45°
(B) 60°
(C) 90°
(D) 180°
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](C) 90°[/bg_collapse]
2. The work done in lifting a brick of mass 2 kg through the height of 5mm above the ground will be:
(A) 2.5 J
(B) 10 J
(C) 50 J
(D) 100 J
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](D) 100 J[/bg_collapse]
3. Which one of the following device converts light energy into electrical energy:
Electric bulb
(B) Electric generator
(C) Photo-cell
(D) Electric cell
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](C) Photo-cell[/bg_collapse]
4. The kinetic energy of a body of mass 2 kg is 25 J. Its speed is:
(A) 5 ms-¹
(B) 125 ms-¹
(C) 25 ms-¹
(D) 500 ms-¹
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](A) 5 ms-¹[/bg_collapse]
5. In Einstein’s mass-energy equation, C is the:
(A) Speed of sound
(B) Speed of light
(C) Speed of earth
(D) Speed of electron
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](B) Speed of light[/bg_collapse]
6. 10-joule work is done by machine in 5 seconds. Its power will be:
(A) 2 W
(B) 10 W
(C) 25 W
(D) 502 W
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](A) 2 W[/bg_collapse]
7. The rate of doing work is called:
(A) Energy
(B) Torque
(C) Power
(D) Momentum
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](C) Power[/bg_collapse]
8. Energy stored in a dam’s water is:
(A) Potential energy
(B) Kinetic energy
(C) Thermal energy
(D) Electrical energy
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](A) Potential energy[/bg_collapse]
9.If the direction of motion of the force is perpendicular to the direction of motion of the body, then work done will be:
(A) Maximum
(B) Minimum
(C) Zero
(D) None of the above
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](C) Zero[/bg_collapse]
10. When a body is lifted through a height h, the work done on it appears in the form of its:
(A) Kinetic energy
(B) Potential energy
(C) Elastic potential energy
(D) Geothermal energy
[bg_collapse view=”button-orange” color=”#4a4949″ expand_text=”Show Answer” collapse_text=”Hide Answer” ](B) Potential energy[/bg_collapse]
