Work, Energy and Power (AIIMS (All India Institute of Medical Sciences) Physics): Questions 20  24 of 25
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Question number: 20
» Work, Energy and Power » WorkEnergy Theorem
Question
A bullet when fired at a target with a velocity of , penetrates 4.5 meter into it. If the bullet is fired with the same velocity at a similar target with a thickness 0.5 meter, then it will emerge from it with a velocity of –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  All of the above 

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Question number: 21
» Work, Energy and Power » WorkEnergy Theorem
Question
Ratio of mass of proton and mass of electron is nearly about 1840. Now, if proton is accelerated by a potential difference of 2 KV, its kinetic energy is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 22
» Work, Energy and Power » WorkEnergy Theorem
Question
A body rests on a horizontal rough surface. The coefficient of friction between the body and the surface is . The body is given a velocity of . What is the distance covered by the body before coming to rest?
Choices
Choice (4)  Response  

a.  112.5 m 

b.  100 m 

c.  120.6 m 

d.  132.5 m 

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Question number: 23
» Work, Energy and Power » Kinetic Energy
Question
A body of mass 10 kg has momentum of. When a force of 0.4 N is applied on it for 15 seconds, what is the change in its kinetic energy –
Choices
Choice (4)  Response  

a.  10.8 J 

b.  5.0 J 

c.  8.2 J 

d.  15.2 J 

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Question number: 24
» Work, Energy and Power » WorkEnergy Theorem
Question
The spring constant of a spring balance is . It is initially stretched by 5 cm from the unstretched position. Then the work done to stretch it further by another 10 cm is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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