Home
Class 11
PHYSICS
Why are two thin blankets are warmer tha...

Why are two thin blankets are warmer than a single blanket of double the thickness?

A

Their surface area increases

B

A layer of air is formed between these two blanket, which is bad conductor

C

These have more wool

D

They absorb more heat from outside

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Convection|13 Videos
  • TRANSMISSION OF HEAT

    ERRORLESS |Exercise Radiation (General, Kirchoff s law, Black body)|38 Videos
  • THERMOMETRY, THERMAL EXPANSION AND CALORIMETRY

    ERRORLESS |Exercise Self Evaluation Test|15 Videos
  • UNITS, DIMENSION & MEASUREMENTS

    ERRORLESS |Exercise All Questions|333 Videos

Similar Questions

Explore conceptually related problems

Why two thin blankets put together are warmer than one blanket of double the thickness ?

Assertion : Two thin blankets put together are warmer than a single blanket of double the thickness. Reason : Thickness increases because of air layer enclosed between the two blankets.

Two layers of cloth of equal thickness provide warmer covering than a single layer of cloth of double the thckness, because they .

It is observed that if two blankets of same thickness x are used together,will keep more warm as compared to a single blanket of thickness 2x. Why ?

Two layers of a cloth of equal thickness provide warmer covering than a single layer of cloth with double the thickness. Why?

If F is the breaking force of a wire, what will be the breaking force for (a) two parallel wires of the same size (b) for a single wire of double the thickness?

Choose the correct statement (a) Two thin woolen blankets keep ou body warmer than a single equally thick woolen blanket (b) Mud houses with thatcvhed roofs keep warm in summer and cool in winter as compared to concrete housed

ERRORLESS -TRANSMISSION OF HEAT-ET Self Evaluation Test
  1. Why are two thin blankets are warmer than a single blanket of double t...

    Text Solution

    |

  2. A rod of 40 cm in length and temperature difference of 80^(@)C at its ...

    Text Solution

    |

  3. Two vessels of different materials are similar in size in every respec...

    Text Solution

    |

  4. In a steady state of thermal conduction, temperature of the ends A and...

    Text Solution

    |

  5. Four rods of silver, copper, brass and wood are of same shape. They ar...

    Text Solution

    |

  6. The two opposite faces of a cubical piece of iron (thermal conductivit...

    Text Solution

    |

  7. Wein's constant is 2892xx10^(-6) MKS unit and the value of lambda(m) f...

    Text Solution

    |

  8. If at temperature T(1) = 1000 K the wavelength is 1.4 xx 10^(-6)m then...

    Text Solution

    |

  9. The wavelength of maximum intensity of radiation emitted by a star is ...

    Text Solution

    |

  10. Two friends A and B are waiting for another friend for tea. A took the...

    Text Solution

    |

  11. There are two spherical balls A and B of the same material with same s...

    Text Solution

    |

  12. Five identical rods are joined as shown in figure. Point A and C are ...

    Text Solution

    |

  13. We cannot boil water inside the earth's satellite. Explain.

    Text Solution

    |

  14. In the following figure, two insulating sheets with thermal resistance...

    Text Solution

    |

  15. The top of an insulated cylindrical container is covered by a disc hav...

    Text Solution

    |

  16. Figure. Shows two air filled bulbs connected by a U-tube partly filled...

    Text Solution

    |

  17. Two conducting rods A and B of same length and cross-sectional area ar...

    Text Solution

    |

  18. The area of the glass of a window of a room is 10 m^(2) and thickness ...

    Text Solution

    |

  19. The spectrum from a black body radiation is a

    Text Solution

    |

  20. The Wien’s displacement law express relation between

    Text Solution

    |

  21. A black body is heated from 27^(@)C to 127^(@)C. The ratio of their en...

    Text Solution

    |