हिंदी

Give an example of some familiar process in which heat is added to an object, without changing its temperature.

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प्रश्न

Give an example of some familiar process in which heat is added to an object, without changing its temperature.

एक पंक्ति में उत्तर
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उत्तर

  1. Melting of ice
  2. Boiling of water.
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अध्याय 4: Thermodynamics - Exercises [पृष्ठ १०७]

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बालभारती Physics [English] Standard 12 Maharashtra State Board
अध्याय 4 Thermodynamics
Exercises | Q 2. iii) | पृष्ठ १०७

संबंधित प्रश्न

Answer in brief.

Why should a Carnot cycle have two isothermal two adiabatic processes?


An ideal gas is taken through an isothermal process. If it does 2000 J of work on its environment, how much heat is added to it?


For work done to be reversible, the process should be ______ 


State the assumptions made for thermodynamic processes.


An ideal gas of volume 2 L is adiabatically compressed to (1/10)th of its initial volume. Its initial pressure is 1.01 x 105 Pa, calculate the final pressure. (Given 𝛾 = 1.4) 


Explain work done during a thermodynamic process.


Explain the thermodynamics of the isobaric process.  


Explain thermodynamics of the adiabatic process.  


When food is cooked in a vessel by keeping the lid closed, after some time the steam pushes the lid outward. By considering the steam as a thermodynamic system, then in the cooking process


Give the equation of state for an isothermal process.


Apply first law for an isothermal process.


Apply first law for an adiabatic process.


Draw the PV diagram for the isothermal process.


Draw the PV diagram for the isochoric process.


Derive the work done in an isothermal process.


In an adiabatic expansion of the air, the volume is increased by 4%, what is the percentage change in pressure? (For air γ = 1.4)


In a petrol engine, (internal combustion engine) air at atmospheric pressure and temperature of 20°C is compressed in the cylinder by the piston to `1/8` of its original volume. Calculate the temperature of the compressed air. (For air γ = 1.4)


Consider the following cyclic process consist of isotherm, isochoric and isobar which is given in the figure.

Draw the same cyclic process qualitatively in the V-T diagram where T is taken along the x-direction and V is taken along the y-direction. Analyze the nature of heat exchange in each process.


For a given ideal gas 6 × 105 J heat energy is supplied and the volume of gas is increased from 4 m3 to 6 m3 at atmospheric pressure. Calculate

  1. the work done by the gas
  2. change in internal energy of the gas
  3. graph this process in PV and TV diagram

A monoatomic gas of pressure p having volume V expands isothermally to a volume 2V and then adiabatically to a volume 16V. The final pressure of the gas is ____________.

`("ratio of specific heats" = 5/3)`


Two identical samples of a gas are allowed to expand (i) isothermally (ii) adiabatically. Work done is ____________.


An ideal gas A and a real gas B have their volumes increased from V to 2V under isothermal conditions. The increase in internal energy ____________.


In an isothermal process, the volume of an ideal gas is halved. One can say that ____________.


Which of the following processes is reversible?  


Consider P-V diagram for an ideal gas shown in figure.


Out of the following diagrams (figure), which represents the T-P diagram?


(i)

(ii)

(iii)

(iv)

When an inflated ballon is suddenly burst, why is the emerging air slightly cooled?


An ideal gas is taken through a cyclic process ABCDA as shown in figure. The net work done by the gas during the cycle is ______.


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