Home
Class 12
PHYSICS
A well insulated substance in solid stat...

A well insulated substance in solid state is heated at a constant rate until it vaporizes completely. The temperature-time graph of the substance is shown below . Which of the following statements is//are true?

A

The specific heat capacity of the substance in solid state is greater than that of the substance in liquid state.

B

The specific latent heat of fusion of the substance is greater than the specific latent heat of vaporization of the substance.

C

If the rate of heating increases, the slope of `AB` will be increased but the length of `BC` remains unchanged.

D

If the mass of the substance is doubled, the length of `DE` is also doubled but the slope of `CD` is halved.

Text Solution

Verified by Experts

The correct Answer is:
B, D
`(B) L_(f) prop BC` & ` L_(V) prop DE`
`(D) DE prop m`, slope of `CD prop (1)/(m)`
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    ALLEN|Exercise EXERCISE -03|11 Videos

  • GEOMETRICAL OPTICS

    ALLEN|Exercise ASSERTION-REASON|40 Videos

  • GEOMETRICAL OPTICS

    ALLEN|Exercise EXERCISE -01|65 Videos

  • CURRENT ELECTRICITY

    ALLEN|Exercise All Questions|427 Videos

  • GRAVITATION

    ALLEN|Exercise EXERCISE 4|9 Videos

Similar Questions

Explore conceptually related problems

In the above problem if heat is supplied at a constant rate of q= 10 cal//min , then plot temperature versus time graph.

Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm . The rate of heating is constant. Which of the following graphs represents the variation of temperature with time?

A solid material is supplied heat at a constant rate. The temperature of material is changing with heat input as shown in the figure. What does the slope of DE represent ?

A solid substance is at 30^(@)C . To this substance heat energy is supplied at a constant rate. Then temperature versus time graph is as shown in the figure. The substance is in liquid state for the portion (of the graph)

State true or false. When heat is supplied to a substance, it always raises the temperature of substance.

ALLEN-GEOMETRICAL OPTICS-EXERCISE -02
  1. During the melting of a slab of ice at 273K at atmospheric pressure,

    Text Solution

    |

  2. Two substances A and B of equal mass m are heated by uniform rate of 6...

    Text Solution

    |

  3. A well insulated substance in solid state is heated at a constant rate...

    Text Solution

    |

  4. Three closed vessels A, B and C are at the same temperature T and cont...

    Text Solution

    |

  5. A partition divides a container having insulated walls into two compar...

    Text Solution

    |

  6. When a gas is heated in a vessel of constant volume , the pressure inc...

    Text Solution

    |

  7. During an experiment, an ideal gas is found to obey a condition (p^2)/...

    Text Solution

    |

  8. An ideal gas can be expanded form an initial state to a certain volume...

    Text Solution

    |

  9. Pressure versus temperature graph of an ideal gas is shown in figure. ...

    Text Solution

    |

  10. When unit mass of water boils to become steam at 100^(@)C, it absorbs ...

    Text Solution

    |

  11. N molecules, each of mass m of gas A and 2 N molecules each of mass 2m...

    Text Solution

    |

  12. A vessel is partitioned in two equal halves by a fixed diathermic sepa...

    Text Solution

    |

  13. A closed vessel contains a mixture of two diatomic gases A and B. Mola...

    Text Solution

    |

  14. N (lt 100) molecules of a gas have velocities 1,2,3….N km/s respective...

    Text Solution

    |

  15. Let barv,v(rms) and vp respectively denote the mean speed. Root mean s...

    Text Solution

    |

  16. The following are the P-V diagrams for cyclic processes for a gas. In ...

    Text Solution

    |

  17. The internal energy of a system remains constant when it undergoes (...

    Text Solution

    |

  18. C(p) is always greater than C(V) due to the fact that:-

    Text Solution

    |

  19. An ideal gas is heated from termperature T(1) to T(2) under various co...

    Text Solution

    |

  20. The indicator diagram for two processes 1 and 2 carrying on an ideal g...

    Text Solution

    |