Properties of Solids & LiquidsThermal Expansion (NEET (NTANational Eligibility cum Medical Entrance Test) Physics): Questions 4  7 of 32
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Question number: 4
» Properties of Solids & Liquids » Thermal Expansion
Question
A piece of metal weight 40 gm in air, when it is immersed in the liquid of specific gravity 1.24 at 27 °C it weighs 25 gm. When the temperature of liquid is raised to 42°C the metal piece weighs 20gm, specific gravity of the liquid at 42°C is 1.20, then the linear expansion of the metal will be
Choices
Choice (4)  Response  

a.  2.6 × 10 ^{3} / ^{o} C 

b.  8.3 × 10 ^{3} /°C 

c.  3.316 × 10 ^{2} /°C 

d.  Question does not provide sufficient data or is vague 

Question number: 5
» Properties of Solids & Liquids » Thermal Expansion
Question
The real coefficient of volume expansion of glycerin is 0.000597 per °C and linear coefficient of expansion of glass is 0.000009 per °C. Then the apparent volume coefficient of expansion of glycerin is
Choices
Choice (4)  Response  

a.  0.00027 per °C 

b.  0.00057 per °C 

c.  0.000558 per °C 

d.  0.00066 per °C 

Question number: 6
» Properties of Solids & Liquids » Thermal Expansion
Question
2 kg of ice at  20°C is mixed with 5 kg of water at 20°C in an insulating vessel having a negligible heat capacity. Calculate the final mass of water remaining in the container. It is given that the specific heats of water and ice are 1 kcal/kg/°C and 0.5 kcal/kg/°C while the latent heat of fusion of ice is 80 kcal/kg
Choices
Choice (4)  Response  

a.  4 kg 

b.  7 kg 

c.  2kg 

d.  6 kg 

Question number: 7
» Properties of Solids & Liquids » Thermal Expansion
Question
The coefficient of volumetric expansion of mercury is 18 × 10 ^{5} / ^{o} C. A thermometer bulb has a volume 10 ^{6} m ^{3} and cross section of stem is 0.006 cm ^{2}. Assuming that bulb is filled with mercury at 0°C then the length of the mercury column at 100°C is
Choices
Choice (4)  Response  

a.  9.2 mm 

b.  0.03 m 

c.  4.5 cm 

d.  7.4 m 
