Class 11Physics10-1.Thermometry, Thermal Expansion and CalorimetryMix Examples-Thermometry, Thermal Expansion and Calorimetry
EasyWhy is cooking faster in a pressure cooker?
(N/A) The boiling point of water is increased inside a pressure cooker by increasing the internal pressure.
In a pressure cooker,as the pressure increases,the boiling point of water rises above its normal value of $100 \ ^\circ\text{C}$.
Consequently,the food is cooked at a higher temperature,which provides more heat energy to the food,resulting in a faster cooking process.
In a pressure cooker,as the pressure increases,the boiling point of water rises above its normal value of $100 \ ^\circ\text{C}$.
Consequently,the food is cooked at a higher temperature,which provides more heat energy to the food,resulting in a faster cooking process.
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$A$ piece of ice falls from a height $h$ so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of $h$ is (Latent heat of ice is $L = 3.4 \times 10^{5} \text{ J/kg}$ and $g = 10 \text{ N/kg}$) (in $\text{ km}$)
DifficultNEET 2016
View SolutionIt is possible for a substance to coexist in all three phases in equilibrium,when the substance is at
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View SolutionMatch 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:
$A$ metal ball immersed in alcohol weighs $W_1$ at $0^{\circ}C$ and $W_2$ at $50^{\circ}C$. The coefficient of cubical expansion of the metal $(\gamma)_m$ is less than that of alcohol $(\gamma)_{Al}$. Assuming that the density of the metal is large compared to that of alcohol,it can be shown that:
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View SolutionThe thermo $e.m.f.$ of a thermocouple varies with the temperature $\theta$ of the hot junction as $E = a\theta + b\theta^2$ in volts,where the ratio $a/b$ is $700\,^{\circ}C$. If the cold junction is kept at $0\,^{\circ}C$,then the neutral temperature is:
DifficultAIEEE 2004
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