Home
Class 11
PHYSICS
Air in a cylinder is suddenly compressed...

Air in a cylinder is suddenly compressed by a piston, which is then maintained at the same position. With the passage of time

A

The pressure decreases

B

The pressure increases

C

The pressure remains the same

D

The pressure may increase or decrease depending upon the nature of the gas

Text Solution

Verified by Experts

The correct Answer is:
A

Due to suddenly compression the temperature of the system increases to very high value. This causes the flow of heat from system to the surrounding, thus decreasing the temperature. The decreases in temperature results in decreases in pressure.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    ERRORLESS|Exercise ASSERTION AND REASON|20 Videos
  • THERMODYNAMICS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (HEAT ENGINE, REFRIGERATOR AND SECOND LAW OF THERMODYNAMICS)|35 Videos
  • SURFACE TENSION

    ERRORLESS|Exercise ASSERTION & REASON|11 Videos
  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS|Exercise ASSERTION & REASON|10 Videos

Similar Questions

Explore conceptually related problems

Air in a cylinder is suddenly compressed by a piston. which is then maintained at the same rosition. With the passage of time

A gas is contained in a metallic cylinder fitted with a piston.the piston is suddenly moved in to compress the gas and is maintained at this position. As time passes the pressure of the gas in the cylinder

A weightless piston divides a thermally insulated cylinder into two parts of volumes V and 3V.2 moles of an ideal gas at pressure P = 2 atmosphere are confined to the part with volume V =1 litre. The remainder of the cylinder is evacuated. The piston is now released and the gas expands to fill the entire space of the cylinder. The piston is then pressed back to the initial position. Find the increase of internal energy in the process and final temperature of the gas. The ratio of the specific heats of the gas, gamma =1.5 .

There is a soap bubble of radius 2.4 xx 10^(-4)m in air cylinder at a pressure of 10^(5) N//m^(2) . The air in the cylinder is compressed isothermal untill the radius of the bubble is halved. Calculate teh new pressure of air in the cylinder. Surface tension of soap solution is 0.08 Nm^(-1) .

A gas for which gamma=1.5 is suddenly compressed to 1//4 th of the initial volume. Then the ratio of the final to initial pressure is

A fixed thermally conducting cylinder has a radius R and height L_0 . The cylinder is open at ita bottom and has a small hole at its top. A piston of mass M is held at a distance L from the top surface, as shown in the figure. The atmospheric pressure is P_0 . While the piston is at a distance 2L from the top, the hole at the top is sealed. The piston is then released, to a position where it can stay in equilibrium. In this condition, the distance of the piston from the top is

A cylindrical container is divided into three parts by two tight fitting pistons. The pistons are connected by a spring. The region between the pistons is vacuum and the other two parts have same number of moles of an ideal gas. Initially, both the gas chambers are at temperature T_(0) and the spring is compressed by 1 m. Length of both gas chambers is 1 m in this position. Now the temperature of the left and right chambers are raised to (4T_(0))/(3) and (5T_(0))/(3) respectively. Find the final compression in the spring in equilibrium. Assume that the pistons slide without friction

ERRORLESS-THERMODYNAMICS-PAST YEARS QUESTIONS
  1. Heat energy absorbed by a system in going through a cyclic process sho...

    Text Solution

    |

  2. A sample of ideal monoatomic gas is taken round the cycle ABCA as show...

    Text Solution

    |

  3. A system is taken from state a to state c by two paths adc and abc as ...

    Text Solution

    |

  4. A sample of 0.1 g of water of 100^(@)C and normal pressure (1.013 xx 1...

    Text Solution

    |

  5. An ideal gas A and a real gas B have their volumes increases from V to...

    Text Solution

    |

  6. Air in a cylinder is suddenly compressed by a piston, which is then ma...

    Text Solution

    |

  7. During an adiabatic process, the pressure of a gas is found to be prop...

    Text Solution

    |

  8. In the given (V - T) diagram, what is the relation between pressure P1...

    Text Solution

    |

  9. A gas is compressed isothermally to half its initial volume. The same ...

    Text Solution

    |

  10. 4.0 g of a gas occupies 22.4 litres at NTP. The specific heat capacity...

    Text Solution

    |

  11. In which of the following processes, heat is neither absorbed nor rele...

    Text Solution

    |

  12. A sample of gas expands from volume V(1) to V(2). The amount of work d...

    Text Solution

    |

  13. Thermodynamic processes are indicated in the following diagram

    Text Solution

    |

  14. A Carnot engine, having an efficiency of eta=1//10 as heat engine, is ...

    Text Solution

    |

  15. Two Carnot engines are operated in succession. The first engine receiv...

    Text Solution

    |

  16. The cofficient of performance of a refrigerator is 5. If the temperatu...

    Text Solution

    |

  17. A refrigerator works between 4^(@)C and 30^(@)C. It is required to rem...

    Text Solution

    |

  18. The temperature inside a refrigerator is t2 °C and the room temperatur...

    Text Solution

    |

  19. The efficiency of an ideal heat engine working between the freezing po...

    Text Solution

    |

  20. Two cylinders A and B of equal capacity are connected to each other vi...

    Text Solution

    |