Chapter 11 MCQs For AMU/JMI XI-Dip.Engg. Entrance Test

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Physics Class IX Chapter 8 Chapter 9 Chapter 10 Chapter 11 Chapter 12 
Chapter 11  : Work Energy & Power    Answers  
We are also conducting class room program for the preparation of AMU/JMI XI/Dip.Engg. Entrance Test-2018

Q1: For work to be done: 

a) A force should act on an object.

b) The object must be displaced.

c) A force should act on an object and the object must be displaced.

d) None.

Q2: A man pushes a wall and the wall does not move

a) No work is done 

b) Work is done by man on the wall

c) Work is done by wall on the man

d) work done by man on the wall is more than the work done by wall on the man

Q3: An object is moving with uniform speed .what is the work done to cover 100m in 10 second if no external force is acting on it.

a) 0
b) 100Joule
c) 200 Joule 
d) 1000 Joke

Q4: if a force of 10N acts on a stationary object for 5 hours. The amount of work done during 1 hour is

a) 0  
b) 5 Joule          
c) 10 Joule 
d) 100 Joke

Q5: A constant force, F acts on an object displaces it through a distance S in the direction of force. The work done W is given by

a) W = F x S     
b) W = F + S
c) W = F / S
d) W = F - S   

Q6: Which of the following options is correct for the formulae? Work done by the force on the object = F × S 

a) F is the magnitude of force applied by the object

b) S is the distance covered by the object

c) S is the distance covered by the object in any direction

d) S is the distance covered by the object in the direction of force applied

Q7: Work has

a) Only magnitude

b) Only direction.

c) Both magnitude and direction

d) Only magnitude and no direction

Q8: The unit of work is 

a) Newton metre (N m)
b) joule (J)                  
c) Both a & b             
d) None

Q9:1 J is the amount of work done on an object when

a) A force of 1 N displaces it by 1 m 

b) A force of 1 N displaces it by1m in the line of  action of the force

c) A force displaces it by 1 m in the direction  normal to the direction of action of force

d) All of the above

Q10: The work done will be zero if 

a) the displacement of the object is non-zero

b) the force on the object is non-zero

c) either the displacement of the object or the force on the object is zero

d) both the displacement of the object or the force on the object is zero

Q11: If a force of 25N displaces an object through the distance of 5m in the direction of force. Calculate the work done if the force act although the displacement.

a) 5 Nm  
b) 25 Nm    
c) 50   Nm  
d) 125 Nm

Q12: Which of following statement is correct?

a) Work done by a force may be positive

b) Work done by a force may be negative

c) Work done by a force may be zero

d) All of these

Q13: When a force is applied on an object, the work done by it is taken as positive. 

a) If the applied force and the displacement of the object are in the same direction

b) If the applied force and the displacement of the object are in opposite direction

c) If the object covers a certain distance

d) Both a & c

Q14: When a force is applied on an object, the work done by it is taken as negative. 

a) If the applied force and the displacement of the object are in the same direction

b) If the applied force and the displacement of the object are in opposite direction

c) If the object covers a certain distance

d) Both a & b

Q15: When a person lifts an object, the work done by person is 

a) 0    
b) positive     
c) negative
d) none

Q16: When a person lifts an object, the work done by the gravity is 

a) 0               
b) positive          
c) negative               
d) none

Q17: The work done in lifting a mass of m kg to a height h is given my

a) mg
b) mg/h
c) gh/m
d) mgh

Where g is the acceleration due to gravity

Q18: The work done in lifting a mass of 10kg to a height of 10 m is (take g=9.8m/s2)

a) 9.8J      
b) 98J       
c) 980J   
d) 9800J

Q19: Chose correct statement

a) An object having a capability to do work is said to possess energy. 

b) The object which does the work loses energy 

c) The object on which the work is done gains energy

d) All of the above

Q20: Choose correct option

1. An object that possesses energy can exert a force on another object.

2. Any object that possesses energy can do work

3. The energy possessed by an object is measured in terms of its capacity of doing work.

a) 1 & are correct & 3 is incorrect

b) 1 & 2 is incorrect & 3 is correct

c) All 1, 2 & 3 are correct

d) All 1, 2 & 3 are incorrect

Q21: The unit of Energy is 

a) Newton metre (N m)     
b) joule (J)                 
c) Both a & b                  
d) None

Q22: 1 J is the energy required to do 

a) 1 joule of work             

b) less than 1 joule of work 

c) more than 1 joule of work

d) more than equal to 1 joule of work

Q23: One kilo joule (kJ) is equal to

a) 10J                           
b) 100 J                        
c) 1000J                           
d) 10000 J

Q24: kinetic energy is the energy possessed by an object due to its

a) Motion         
b) Position     
c) Motion and position
d) weight  

Q25: Choose the correct option

1. The kinetic energy of a body moving with a certain velocity is equal to the work done on it to make it acquire that velocity.

2. A moving body can do the work equal to the kinetic energy possessed by it.

a) 1 is correct & 2 is incorrect

b) 1 is incorrect & 2 is correct

c) Bot 1 & 2 are correct

d) Bot 1 & 2 are incorrect

Answers
  

Physics Class IX Chapter 8 Chapter 9 Chapter 10 Chapter 11 Chapter 12 

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