Class 11Physics10-1.Thermometry, Thermal Expansion and CalorimetryMix Examples-Thermometry, Thermal Expansion and Calorimetry
DifficultStatement $(I)$: $A$ device in which heat measurement can be made is called a calorimeter.
Statement $(II)$: Skating is possible on snow due to the formation of water below the skates. Water is formed due to the increase of temperature and ice melts.
Statement $(III)$: Two bodies at different temperatures are mixed in a calorimeter. The total internal energy of the two bodies remains conserved.
Which of the following is correct?
Statement $(II)$: Skating is possible on snow due to the formation of water below the skates. Water is formed due to the increase of temperature and ice melts.
Statement $(III)$: Two bodies at different temperatures are mixed in a calorimeter. The total internal energy of the two bodies remains conserved.
Which of the following is correct?
- AStatements $I$, $II$ and $III$ are true
- BStatement $I$ is true, but statements $II$ and $III$ are false
- CBoth statements $I$ and $II$ are true, but statement $III$ is false
- DBoth statements $I$ and $III$ are true, but statement $II$ is false
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The pressure applied from all directions on a cube is $P$. How much should its temperature be raised to maintain the original volume? The volume elasticity of the cube is $\beta$ and the coefficient of volume expansion is $\alpha$.
Difficult
View SolutionAnswer the following questions based on the $P$ - $T$ phase diagram of carbon dioxide:
$(a)$ At what temperature and pressure can the solid,liquid and vapour phases of $CO_{2}$ co-exist in equilibrium?
$(b)$ What is the effect of decrease of pressure on the fusion and boiling point of $CO_{2}$?
$(c)$ What are the critical temperature and pressure for $CO_{2}$? What is their significance?
$(d)$ Is $CO_{2}$ solid,liquid or gas at $(i)$ $-70^{\circ}C$ under $1\;atm$,$(ii)$ $-60^{\circ}C$ under $10\;atm$,$(iii)$ $15^{\circ}C$ under $56\;atm$?
$(a)$ At what temperature and pressure can the solid,liquid and vapour phases of $CO_{2}$ co-exist in equilibrium?
$(b)$ What is the effect of decrease of pressure on the fusion and boiling point of $CO_{2}$?
$(c)$ What are the critical temperature and pressure for $CO_{2}$? What is their significance?
$(d)$ Is $CO_{2}$ solid,liquid or gas at $(i)$ $-70^{\circ}C$ under $1\;atm$,$(ii)$ $-60^{\circ}C$ under $10\;atm$,$(iii)$ $15^{\circ}C$ under $56\;atm$?
Medium
View Solution'Stem correction' in platinum resistance thermometers is eliminated by the use of
MediumAIIMS 1998
View SolutionColumn $I$ gives some devices and Column $II$ gives some processes on which the functioning of these devices depends. Match the devices in Column $I$ with the processes in Column $II$.
Column $I$ Column $II$ $(A)$ Bimetallic strip $(p)$ Radiation from a hot body $(B)$ Steam engine $(q)$ Energy conversion $(C)$ Incandescent lamp $(r)$ Melting $(D)$ Electric fuse $(s)$ Thermal expansion of solids
| Column $I$ | Column $II$ |
| $(A)$ Bimetallic strip | $(p)$ Radiation from a hot body |
| $(B)$ Steam engine | $(q)$ Energy conversion |
| $(C)$ Incandescent lamp | $(r)$ Melting |
| $(D)$ Electric fuse | $(s)$ Thermal expansion of solids |
$A$ lead bullet at $27\ ^oC$ just melts when stopped by an obstacle. Assuming that $25\%$ of heat is absorbed by the obstacle,the velocity of the bullet at the time of striking is ....... $m/s$. (Melting point of lead $= 327\ ^oC$,specific heat of lead $= 0.03\ cal/g\ ^oC$,latent heat of fusion of lead $= 6\ cal/g$,and $J = 4.2\ J/cal$)
Difficult
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