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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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Two thin blankets usually warmer than one thick blanket because air is trapped between them. And the air is bad conductor of heat. It does not pass heat from our body to the surroundings.
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LAKHMIR SINGH & MANJIT KAUR-HEAT-EXERCISE
  1. The normal temperature of a healthy person is thirty seven degrees on

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  2. Digital thermometers available these days for measuring temperature us...

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  3. Which of the following is not a method of transfer of heat ?

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  4. Which of the following is not an insulator ?

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  5. A liquid which is a good conductor of heat is :

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  6. The woollen clothes keep us warm during winter because : A. Wool is ...

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  7. The objects made of steel, mica, wood and brass are lying in the same ...

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  8. The transfer of heat by convection can take place in

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  9. The convection currents in air transfer heat

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  10. Which of the following conditions lead to the blowing of sea-breeze in...

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  11. The hot objects which can transfer heat by radiation are :

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  12. The invisible rays which transfer heat by radiation are called :

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  13. The heat from the sun reaches us on the earth by the process of :

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  14. The process which can transfer heat through the vacuum as well as air ...

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  15. The bulb of thermometer A is coated with lampblack and the bulb of the...

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  16. One end of the objects such as a steel spoon, a plastic scale, a penci...

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

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  18. A person has a white shirt and a black shirt. Which shirt will make hi...

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  19. A person has a white shirt and a black shirt. Which shirt will make hi...

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  20. Look at the Figure given alongside. Mark where the heat is being trans...

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