MEDIUM
4th CBSE
IMPORTANT
Earn 100

 Give an example of a wheel and axle. 

Important Questions on Force, Work and Energy

MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q C
Why is friction essential for us? 
 
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q C
When a wall is pushed, it does not move from its place. Is any work done in this situation? Why? 
 
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q C

Rishabh’s mother seldom uses LPG and electrical equipment and mostly uses solar energy for cooking and heating purposes. Rishabh has convinced his friends and neighbours also to do so. What is solar energy? 

MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q C

Rishabh’s mother seldom uses LPG and electrical equipment and mostly uses solar energy for cooking and heating purposes. Rishabh has convinced his friends and neighbours also to do so. What value does Rishabh’s mother show by using solar energy? 

MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q C
What is meant by gravitational force? 
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q C
What is friction? 
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q D
What is the difference between a lever and a pulley? 
 
MEDIUM
4th CBSE
IMPORTANT
LEARNING SCIENCE Integrated with Environmental Education 4..>Chapter 11 - Force, Work and Energy>Exercises>Q D
What is water energy? How is it related to hydroelectricity?