CBSE NCERT Solutions for Class 9 Science Chapter 11

CBSE NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Page 148 or Page 149 or Page 152 or Page 156 or Exercises in English Medium or पेज 164 के उत्तर or पेज 165 के उत्तर or पेज 169 के उत्तर or पेज 174 के उत्तर or  अभ्यास के प्रश्न उत्तर  to study online or in PDF form. Download NCERT Solutions for class 9 other subjects also.


CBSE NCERT Solutions for Class 9 Science Chapter 11

CBSE NCERT Solutions for Class 9 Science Chapter 11

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Hindi Medium Downloads
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Page 148 Answers

NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 148 are given below to study online. For other questions see Page 149 or Page 152 or Page 156 or Exercises or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 148

Page 149 Answers





NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 149 are given below to study online. For other questions see Page 148 or Page 152 or Page 156 or Exercises or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 149
9 Science Chapter 11 Work and Energy Intext Questions on page 149 in english medium

Page 152 Answers




NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 152 are given below to study online. For other questions see Page 148 or Page 149 or Page 156 or Exercises or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 152

Page 156 Answers

NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 156 are given below to study online. For other questions see Page 148 or Page 149 or Page 152 or Exercises or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 156

Exercises Questions Answers




NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Exercises questions in English are given below to study online. For other questions see Page 148 or Page 149 or Page 152 or Page 156 or go for Hindi Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Exercises
NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Exercises answers in pdf




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पेज 164 के उत्तर




NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 164 in Hindi are given below to study online. For other questions see पेज 165 के उत्तर or पेज 169 के उत्तर or पेज 174 के उत्तर or  अभ्यास के प्रश्न उत्तर or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 164 in Hindi

पेज 165 के उत्तर





NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 165 in Hindi are given below to study online. For other questions see पेज 164 के उत्तर or पेज 169 के उत्तर or पेज 174 के उत्तर or  अभ्यास के प्रश्न उत्तर or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 165 in Hindi

पेज 169 के उत्तर




NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 169 in Hindi are given below to study online. For other questions see पेज 164 के उत्तर or पेज 165 के उत्तर or पेज 174 के उत्तर or  अभ्यास के प्रश्न उत्तर or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 169 in Hindi

पेज 174 के उत्तर




NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Intext Questions on page 174 in Hindi are given below to study online. For other questions see पेज 164 के उत्तर or पेज 165 के उत्तर or पेज 169 के उत्तर or  अभ्यास के प्रश्न उत्तर or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11 Work and Energy Intext Questions on page 174 in Hindi

अभ्यास के प्रश्न उत्तर





NCERT Solutions for Class 9 Science Chapter 11 Work and Energy Exercises Questions in Hindi are given below to study online. For other questions see पेज 164 के उत्तर or पेज 165 के उत्तर or पेज 169 के उत्तर or पेज 174 के उत्तर or go for English Medium Solutions. Go back to Class 9 Science main page or move to Top of page.

9 Science Chapter 11
9 Science Chapter 11 solutions in pdf




9 Science Chapter 11 all question answers free
9 Science Chapter 11 guide in hindi



9 Science Chapter 11 download free in pdf
9 Science Chapter 11 in hindi
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Class 9 Science – Physics – Solutions

Work and Energy – Important Questions with answers

Question 1:
A boy of mass 55 kg runs up a flight of 40 stairs, each measuring 0.15 m. calculate the work done bye the boy.
Answer 1:
3300 J

Question 2:
What is the difference between potential energy and kinetic energy?
Answer 2:
Potential energy of a body is by virtue of its position or shape whereas kinetic energy of a body is by virtue of its motion.

Question 3:
A porter lifts a luggage of 15 kg from the ground and puts it on his head 1.5 m above the ground. Calculate the work done by him on the luggage.
Answer 3:
225 J

Question 4:
Two girls, each of weight 400 N, climb up a rope through a height of 8 m. We name one girl A and the other girl B. Girl A takes 20 s while b takes 50 s to accomplished this task. What is the power expended by each girl?
Answer 4:
160 W, 64 W

More Questions for Exams

Question 1:
A bullet of mass 20 g is found to pass two points 30 m apart in 4 s? Assuming the speed to be constant, find its kinetic energy.
Answer 1:
0.5625 J

Question 2:
Why do some engines require fuels like petrol and diesel?
Answer 2:
Internal combustion heat engines use the chemical energy of fossil fuels (petrol and diesel) for their operation. These engines first convert the chemical energy of the fuels into heat energy which is later on converted into mechanical energy.

Question 3:
A bullet of mass 5 g travels with a speed of 500 m/s. if it penetrates a fixed target which offers a constant resistive force of 1000 N to the motion of the bullet, find (a) the initial kinetic energy of the bullet (b) the distance through which the bullet has penetrated.
Answer 3:
(a) 625 J (b) 0.625 m

Question 4:
A ball of mass 1 kg is dropped from a height of 5 m. (a) Find the kinetic energy of the ball just before it reaches the ground (b) what is the speed at this instant?
Answer 4:
(a) 50 J (b) 10 m/s

Question 5:
A man does 200 J of work in 10 s and a boy does 100 J of work in 4 s. (a) who is delivering more power? (b) Find the ratio of the power delivered by the man to that delivered by the man to that delivered by the boy.
Answer 5:
(a) The boy delivers more power
(b) 4/5 J