Properties of Solids & Liquids (NEET (NTANational Eligibility cum Medical Entrance Test) Physics): Questions 107  111 of 190
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Question number: 107
» Properties of Solids & Liquids » Elastic Behavior
Question
The force required to separate two glass plates of area 10 ^{2 } m ^{2} with a film of water 0.05 mm thick between them, is (Surface tension of water is 70 × 10 ^{3} N/m)
Choices
Choice (4)  Response  

a.  50 N 

b.  14 N 

c.  28 N 

d.  38 AT 

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Question number: 108
» Properties of Solids & Liquids » Heat Transfer » Convection
Question
Two rods A and B are of equal lengths. Their ends are kept between the same temperature and their areas of crosssections are A _{1} and A _{2} and thermal conductivities K _{1} and K _{2. } The rate of heat transmission in the two rods will be equal, if
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


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Question number: 109
» Properties of Solids & Liquids » Terminal Velocity
Assertion (Ꭺ)
Bernoulli’s theorem holds for incompressible, nonviscous fluids.
Reason (Ꭱ)
The factor is called velocity head.
Choices
Choice (4)  Response  

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

b.  Ꭺ is false but Ꭱ is true 

c.  Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ 

d.  Both Ꭺ and Ꭱ are false 

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Passage
Read the passage given below and answer the questions that follows:
In a thermally insulated tube of cross sectional area 4 cm ^{2} a liquid of thermal expansion coefficient 10 ^{}^{3 } K ^{}^{1} is flowing. Its velocity at the entrance is 0.1 m/s. At the middle of the tube a heater of a power of 10 kW is heating the liquid. The specific heat capacity of the liquid is 1.5 kJ/ (kg K), and its density is 1500 kg/m ^{3} at the entrance.
Question number: 110 (1 of 3 Based on Passage) Show Passage
» Properties of Solids & Liquids » Thermal Expansion
Question
What is the density of liquid at the exit?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 

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Question number: 111 (2 of 3 Based on Passage) Show Passage
» Properties of Solids & Liquids » Thermal Expansion
Question
How much bigger is the volume rate of flow at the end of the tube than at the entrance in cubic meters?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  None of the above 

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