- Concept of Heat and Temperature
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- Zeroth Law of Thermodynamics
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- Measurement of temperature
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- Ideal Gas Equation and Absolute Temperature
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- Thermal Expansion
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- Thermal stress
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- Specific Heat Capacity
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- Calorimetry
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- Change of phases
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- Solved Examples

**Question 1:**

There are three Rods A,B,C of equal length L at same temperature .There coefficient of linear expansion are α_{a}, α_{b}, α_{r }respectively. if the temperature of all rod are increased by θ ° C and coefficient of linear expansion is like α_{b}>α_{a} >α_{c}. then what will be the final order of length of rod

a. L_{c}>L_{b}>L_{c}

b. L_{b}= L_{a}= L_{c}

c. L_{a}>L_{b}>L_{c}

d. L_{b}>L_{a}>L_{c}

**Question-2:**

Three bodies are having temperature

T_{A} = - 42 °F

T_{B} = - 10 °C

T_{C} = 2000 K

Which body among these is most warm

a, T_{A}

b, T_{B}

c, T_{C}

d, None of these

**Question-3**

A sphere of mass m and diameter D is Heated by temperature ΔT , if Coefficient of linear expansion is α what will be the change in the Surface Area

a, π D^{2}α ΔT (α ΔT+ 2)

b. π D^{2}α ΔT (α ΔT- 2)

c. π D^{2}α ΔT (α ΔT+ 4)

d. π D^{2}α ΔT (α Δ- 4)

**Question-4**

if α is the Coefficient of linear expansion of block and L denotes length, T denotes Temperature then which one of these is true

a, dL - α L dT = 0

b, dL + α L dT = 0

c, αdL - L dT = 0

D, αdL - +L dT = 0

**Question-5**

Consider the following statement

A.If body A and body B are in state of thermal equilibrium, B & C are in state of thermal equilibrium then A & C are in Equilibrium

B. If body A and body B are not in equilibrium and A & C are not in thermal equilibrium then B & C may be in thermal equilibrium.

a. Only A is Correct

b. Only b is Correct

c. A & B is Correct

d. Neither is correct

For any material, density ρ , mass m and volume V are related by ρ = m/V and B is coefficient of volume expansion then which one is true

a, B = (1/ρ) (dρ/ dT)

b, B = -(1/ρ) (dρ/ dT)

C, B = (1/ρ) (dρ/ dV)

d, B = (1/ρ) (dρ/ dV)

A constant volume air thermometer works on

a, Pascal law

b, Charles law

c, Boyles law

d, Archimedes

10 liters of benzene weight

a, more in summer than in winter

b, more in winter than in Summer

c, equal in winter and summer

d, none of above

An Aluminum Rod of length L

a, αΔT

B, Zero

c. -αΔT

D. none of the above

A metal ball immersed in alcohol weight m

a. m

b. m

c. m

d none of the above

if a is coefficient of Linear expansion, b coefficient of areal expansion, c coefficient of Volume expansion. Which of the following is true

a. b=2a

b. c=3a

c. b=3a

d. a=2b

the coefficient of linear expansion of an in homogenous rod changes linearly from α

a α

b 1/2(α

c. √α

d. (α

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