Punjab 9th Physics Ch 5 Work Energy and Power Online Test Mcqs

Q: How can I prepare for Punjab 9th Physics Ch 5 Work Energy and Power Online Test Mcqs?

You can prepare for Punjab 9th Physics Ch 5 Work Energy and Power Online Test Mcqs by attempting the free online quizzes at Gotest.com.pk. We provide instant results, performance reports, and detailed explanations for every question.

Question 1

1. What is the power utilized when 100 J of work is done in 5 s:

Question 2

2. A weight lifter of power 1960 watt lifts a load of mass 'M' from the ground to a height of 2m in 3 second. 'M' is:

Question 3

3. The SI unit of power:

Question 4

4. A car, an elephant and a cricket ball have same kinetic energies. Which of these have greater speed?

Answer

Cricket ball

Answer

all have same speed

Question 5

5. If a car doubles its speed, its kinetic energy will be:

Answer

increased to four times

Answer

increased to three times

Question 6

6. Which of the following is not renewable energy source?

Answer

Solar energy

Answer

Wind energy

Answer

Fossil fuels

Answer

Hydroelectric energy

Question 7

7. The energy possessed by a body by virtue of its position is:

Answer

chemical energy

Answer

solar energy

Answer

kinetic energy

Answer

potential energy

Question 8

8. A box is taken to the second floor of a building by doing some work. This work converts to:

Answer

kinetic energy

Answer

potential energy

Answer

heat energy

Answer

sound energy

Question 9

9. A practical engine cannot have an efficiency equal to:

Question 10

10. Which one is renewable source of:

Answer

Natural gas

Question 11

11. The unit of work or energy joule (J) is equal to:

Answer

newton second

Answer

newton metre

Answer

horsepower

Answer

watt metre

Question 12

12. The SI unit of power is:

Question 13

13. One unit of horsepower is equivalent to:

Question 14

14. A force is acting on body but causes no displacement. The work done on the body is:

Question 15

15. A joule can also be written as:

Answer

kgm²s⁻³

Answer

kgm²s⁻²

Question 16

16. A ball weighing 50 N is lifted to a height of 5 metre. The potential energy stored in it is:

Question 17

17. A ball is thrown downward with an initial velocity, its:

Answer

Both EK & Ep increases

Answer

Both EK & Ep decreases

Answer

Ek increases & Ep decreases

Answer

EK decreases & Ep increases

Question 18

18. The power of a water pump is 2kW. The amount of water it can raise in one minute to a height of 5 meter is:

Answer

1000 litres

Answer

2000 litres

Answer

1200 litres

Answer

2400 litres

Question 19

19. A bullet of mass 0.05 kg has a speed of 300 ms⁻¹. Its kinetic energy will be:

Question 20

20. If the magnitude of momentum of an object is doubled, the kinetic energy of the object will:

Answer

remain the same

Answer

increase to four times

Answer

reduce to one-half

Question 21

21. Work done is maximum when the angle between the force F and the displacement d is:

Question 22

22. A 4kg body is thrown vertically upward from the ground with a velocity of 5 ms⁻¹. If friction is neglected its kinetic energy just before hitting the ground is:

Question 23

23. A heavy and a lighter object have same momentum. The object with greater kinetic energy is:

Answer

either (a) or (b)

Answer

same kinetic energy

Question 24

24. The type of energy derived from heated ground water is:

Answer

hydroelectric energy

Answer

geothermal energy

Answer

nuclear energy

Answer

tidal energy

Question 25

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Class	9th Class
Chapter	Chapter 5: Work Energy and Power
Board	Punjab Board
Test Type	MCQs Test
Total Questions	25 MCQs
Time Allowed	30 Minutes

Punjab 9th Physics Ch 5 Work Energy and Power Online Test Mcqs

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