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Work and Energy: 9th Class Physics Chapter 6 MCQs

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This post has Class 9 Physics Chapter 6 Notes of students. Here you can find 9th Class Physics Chapter 6 MCQs. Name of this Chapter is Work and Energy. These Multiple Choice Questions are for practice to those students who are looking for it online.

Work and Energy: 9th Class Physics Chapter 6 MCQs for Students

You may also like: MCQs of Chapter 5   –   MCQs of Chapter 7

1. The work by which transfer of heat takes place are:

(A) 45°
(B) 60°
(C) 90°
(D) 180°

(C) 90°

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

(D) 100 J

3. Which one of the following device converts light energy into electrical energy:

Electric bulb
(B) Electric generator
(C) Photo-cell
(D) Electric cell

(C) Photo-cell

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

(A) 5 ms-¹

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

(B) Speed of light

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

(A) 2 W

7. The rate of doing work is called:

(A) Energy
(B) Torque
(C) Power
(D) Momentum

(C) Power

8. Energy stored in a dam’s water is:

(A) Potential energy
(B) Kinetic energy
(C) Thermal energy
(D) Electrical energy

(A) Potential energy

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

(C) Zero

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

(B) Potential energy

9th Class Physics Chapter 6 Short Questions and Answers are also available.

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