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Why are two thin blankets are warmer tha...

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

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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

SL ARORA-Thermal Properties of Matter-Exercise
  1. Why do the metal utensils have wooden handles?

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  2. The bird that hibernates in winter is

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  3. Why are two thin blankets are warmer than a single blanket of double t...

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  4. Why are calorimeter made of metal, why not of glass?

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  5. When we step barefoot into an office with a marble floor, we feel cold...

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  6. We can easily boil water in a paper cup. Why?

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  7. A piece of paper wrapped tightly on a wooden rod is found to get charg...

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  8. Woolen cloths are worn in winter but not in summer. Why?

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  9. Stainless steel cooking pans are perferred with extra copper bottoms. ...

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  10. If a drop of water falls on a very hot iron, it does not evaporates fo...

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  11. Explain why a brass tumbler feels much colder than a wooden tray on a ...

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  12. Usually a good conductor of heat is a good conductor of electricity al...

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  13. Why do electrons in insulators not contribute to its conductivity?

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  14. As air is a bad conductor of heat, whu do we not feel warm without clo...

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  15. Room are provided with the ventilators near the roof. Why?

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  16. Why snow is better heat insulator than ice?

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

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  18. Water is heated from below but not from top. Why?

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  19. Statement-1: Coolant coils are fitted at the top of a refrigerator , f...

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  20. The earth constantly receives heat radiation from the sun and gets war...

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