Home
Class 11
PHYSICS
If the ratio of specific heat of a gas a...

If the ratio of specific heat of a gas at constant pressure to that at constant volume is `gamma`, the change in internal energy of a mass of gas when the volume changes from V to 2V at constant pressure p is

A

`R/((gamma-1))`

B

PV

C

`(PV)/((gamma-1))`

D

`(gammaPV)/((gamma-1))`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaU=f/2 n R DeltaT=(1/(gamma-1))PdV=((PV)/(gamma-1))`
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    RESONANCE ENGLISH|Exercise Exercise|65 Videos

  • KTG & THERMODYNAMICS

    RESONANCE ENGLISH|Exercise SUBJECTIVE QUESTIONS|27 Videos

Similar Questions

Explore conceptually related problems

If the ratio of specific heat of a gas of constant pressure to that at constant volume is gamma , the change in internal energy of the mass of gas, when the volume changes from V to 2V at constant pressure p is

The ratio of the molar heat capacities of a diatomic gas at constant pressure to that at constant volume is

The ratio of the specific heat at constant pressure to that at constant volume is larger for a diatomic gas than for a monoatomic gas.

For a gas if ratio of specific heats at constant pressure and volume is g then value of degrees of freedom is

For an ideal gas, the heat of reaction at constant pressure and constant volume are related as

Define molar specific heat capacities of a gas at constant pressure and constant volume. Why are they called 'principal specific heat capacities?

If C_P and C_V denote the specific heats of nitrogen per unit mass at constant pressure and constant volume respectively, then

A diatomic gas is heated at constant pressure. If 105J of heat is given to the gas, find (a) the change in internal energy of the gas (b) the work done by the gas.

C_p is always greater than C_v for a gas, which of the following statements provide, partly or wholly, the reason for this? (i) No work is done by a gas at constant volume (ii) When a gas absorbs heat at constant pressure, its volume must change (iii) For the same change in temperature, the internal energy of a gas changes by a smaller amount at constant volume that at constant pressure (iv) The internal energy of an ideal gas is a function only of its temperature

Assetion : Specific heat of a gas at constant pressure is greater than its specific heat at constant volume. This is because at constant pressure, some heat is spent in expansion of the gas.

RESONANCE ENGLISH-KINETIC THEORY OF GASES AND THERMODYNAMICS-Exercise
  1. The value of gamma of linear, arragement of triatomic gas molecules is

    Text Solution

    |

  2. If the molar specific heat of a gas at constant pressure is 7/2R, then...

    Text Solution

    |

  3. The internal energy change in a system that has absorbed 2 kcal of hea...

    Text Solution

    |

  4. If Delta U and Delta W represent the increase in internal energy and w...

    Text Solution

    |

  5. A monoatomic gas at pressure P(1) and volume V(1) is compressed adiaba...

    Text Solution

    |

  6. A mass of diatomic gas (gamma = 1.4) at a pressure of 2 atmosphere is ...

    Text Solution

    |

  7. When temperature of a gas is increased then which of the following sta...

    Text Solution

    |

  8. A thermos flask contains coffee. It is vigorously sheken, considering ...

    Text Solution

    |

  9. The work done by a gas taken through the closed process ABCA, see fig...

    Text Solution

    |

  10. A thermodynamic system is taken through the cycle ABCD as shown in fig...

    Text Solution

    |

  11. For adiabatic process of an ideal gas the value of (dP)/P is equals to

    Text Solution

    |

  12. The change in internal energy of two moles of a gas during adiabatic e...

    Text Solution

    |

  13. isobaric modulus of elasticity is

    Text Solution

    |

  14. The internal energy of one mole mono-atomic gas is

    Text Solution

    |

  15. A carnot's engine works between a source at a temperature of 27^(@)C a...

    Text Solution

    |

  16. If the ratio of specific heat of a gas at constant pressure to that at...

    Text Solution

    |

  17. In an adiabatic process-

    Text Solution

    |

  18. The amount of heat given to a system in a cyclic thermodynamical proce...

    Text Solution

    |

  19. There are two parts of a vessel. The pressure in one part is P and its...

    Text Solution

    |

  20. Statement-I: it is possible for both the pressure and volume of a mono...

    Text Solution

    |