Properties of Solids & LiquidsLatent Heat (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 1  4 of 7
Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2144 questions. Access all new questions we will add tracking exampattern and syllabus changes. View Sample Explanation or View Features.
Rs. 550.00 or
How to register?
Question number: 1
» Properties of Solids & Liquids » Latent Heat
Question
A lead bullet at 27° C just n tits when, stopped by an obstacle. Assuming that 25 % of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking (M. P. of lead = 327°C, specific heat of lead = 0.03 cal/gm °C, latent heat of fusion of lead = 6 cal/gm and J = 4.2 joule/cal)
Choices
Choice (4)  Response  

a.  307.5 m/sec 

b.  1230 m/sec 

c.  410 m/sec 

d.  Question does not provide sufficient data or is vague 

Question number: 2
» Properties of Solids & Liquids » Latent Heat
Question
A lead bullet at 25°C just n tits when stopped by an obstacle. Assuming that 25 % of heat is absorbed by the obstacle, then the velocity of the bullet at the time of striking (M. P. of lead = 320°C, specific heat of lead = 0.02 cal/gm°C, latent heat of fusion of lead = 6 cal/gm and J = 4.2 joule/cal)
Choices
Choice (4)  Response  

a.  4.010 m/sec 

b.  0.365 m/sec 

c.  307.5 m/sec 

d.  None of the above 

Question number: 3
» Properties of Solids & Liquids » Latent Heat
Question
Assertion (Ꭺ)
Latent heat of fusion of ice is 336000 J kg ^{1}
Reason (Ꭱ)
Latent heat refers to change of state without any change in temperature.
Choices
Choice (4)  Response  

a.  Both Ꭺ and Ꭱ are false 

b.  Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ 

c.  Ꭺ is false but Ꭱ is true 

d.  Ꭺ is true but Ꭱ is false 

Question number: 4
» Properties of Solids & Liquids » Latent Heat
Question
A bullet moving with a uniform velocity v, stops sudden after hitting the target and the whole mass melts be m, specific heat S, initial temperature 28°C, melting point 375 °C and the latent heat L. Then v is given by
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

