CBSE Class 11 Thermometry Thermal Expansion and Specific Heat Worksheet A

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1.Define triple point of water?

2. State Dulong and petit law?

3. Why the clock pendulums are made of invar, a material of low value of coefficient of linear expansion?

4. Why does the density of solid | liquid decreases with rise in temperature?

5. Two bodies at different temperatures T₁, and T₂ are brought in thermal contact do not necessarily settle down to the mean temperature of T₁ and T₂?

6. The resistance of certain platinum resistance thermometer is found to be 2.56 Ω at 0°c and 3.56 Ω at 100°c. When the thermometer is immersed in a given liquid, its resistance is observed to 5.06 Ω. Determine the temperature of liquid?

7. Calculate C_p for air, given that C_v =0.162 cal g^-1 k^-1 and density air at N.T. P is 0.001293 g|cm³?

8. Develop a relation between the co-efficient of linear expansion, co-efficient superficial expansion and coefficient of cubical expansion of a solid?

9. Calculate the amount of heat required to convert 1.00kg of ice at – 10°c into steam at 100°c at normal pressure. Specific heat of ice = 2100J|kg|k. Latent heat of fusion of ice = 3.36x10⁵J|kg, specific heat of water = 4200J|kg|k. Latent heat of vaporization of water = 2.25 x10⁶J|kg?

10. A ball is dropped on a floor from a height of 2cm. After the collision, it rises up to a height of 1.5m. Assuming that 40% of mechanical energy lost goes to thermal energy into the ball. Calculate the rise in temperature of the ball in thermal energy into the ball. Calculate the rise in temperature of the ball in the collision. Specific heat capacity of the ball is 800J/k. Take g = 10m/s² 

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