Class 11Physics10-1.Thermometry, Thermal Expansion and CalorimetryMix Examples-Thermometry, Thermal Expansion and Calorimetry
Difficult$A$ hunter fired a metallic bullet of mass $m \ kg$ from a gun towards an obstacle and it just melts when it is stopped by the obstacle. The initial temperature of the bullet is $300 \ K$. If $\frac{1}{4}$ th of the heat is absorbed by the obstacle,then the minimum velocity of the bullet is (Melting point of bullet $= 600 \ K$,Specific heat of bullet $= 0.03 \ cal \ g^{-1} {}^{\circ} C^{-1}$,Latent heat of fusion of bullet $= 6 \ cal \ g^{-1}$) (in $ms^{-1}$)
- A$410$
- B$260$
- C$460$
- D$310$
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Similar Questions
Match the following List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. When ice melts into water $I$. Volume increases $B$. When water changes into steam $II$. Volume decreases $C$. Melting point of ice $III$. Increases with increase of pressure $D$. Boiling point of water $IV$. Decreases with increase in pressure
| List-$I$ | List-$II$ |
| $A$. When ice melts into water | $I$. Volume increases |
| $B$. When water changes into steam | $II$. Volume decreases |
| $C$. Melting point of ice | $III$. Increases with increase of pressure |
| $D$. Boiling point of water | $IV$. Decreases with increase in pressure |
Match List-$I$ with List-$II$.
List-$I$ List-$II$ $(A)$ Heat capacity of body $(I)$ $J kg^{-1}$ $(B)$ Specific heat capacity of body $(II)$ $J K^{-1}$ $(C)$ Latent heat $(III)$ $J kg^{-1} K^{-1}$ $(D)$ Thermal conductivity $(IV)$ $J m^{-1} K^{-1} s^{-1}$
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $(A)$ Heat capacity of body | $(I)$ $J kg^{-1}$ |
| $(B)$ Specific heat capacity of body | $(II)$ $J K^{-1}$ |
| $(C)$ Latent heat | $(III)$ $J kg^{-1} K^{-1}$ |
| $(D)$ Thermal conductivity | $(IV)$ $J m^{-1} K^{-1} s^{-1}$ |
Choose the correct answer from the options given below:
$A$ refrigerator converts $500\,g$ of water at $25\,^{\circ}C$ into ice at $-10\,^{\circ}C$ in $3\,hours\,40\,minutes$. The quantity of heat removed per minute is ........ $cal/\min$.
(Specific heat of water $= 1\,cal/g\,^{\circ}C$,Specific heat of ice $= 0.5\,cal/g\,^{\circ}C$,Latent heat of fusion $= 80\,cal/g$)
(Specific heat of water $= 1\,cal/g\,^{\circ}C$,Specific heat of ice $= 0.5\,cal/g\,^{\circ}C$,Latent heat of fusion $= 80\,cal/g$)
Medium
View Solution$A$ beaker of height $H$ is made up of a material whose coefficient of linear thermal expansion is $3\alpha$. It is filled up to the brim by a liquid whose coefficient of thermal expansion is $\alpha$. If now the beaker along with its contents is uniformly heated through a small temperature $T$,the level of liquid will reduce by (given $\alpha T << 1$):
Difficult
View Solution$A$ geyser heats water flowing at the rate of $3.0 \, L/min$ from $27 \, ^{\circ}C$ to $77 \, ^{\circ}C$. If the geyser operates on a gas burner,what is the rate of consumption (in $g/min$) of the fuel if its heat of combustion is $4.0 \times 10^{4} \, J/g$?
Medium
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