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Why a thermos flask has its interior sur...

Why a thermos flask has its interior surface mirror like polished.

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PHYSICS GALAXY - ASHISH ARORA-HEAT TRANSFER -Discussion Question
  1. Why are clear nights colder than cloudy nights ?

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  2. White clothing is more comfortable in summer but colourful clothing in...

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  3. Why a thermos flask has its interior surface mirror like polished.

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  4. If we put our hands above a fire or at the side of the fire to get war...

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  5. The body ofa refrigerator is painted white, but the pipes and metal gr...

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

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  7. It is observed that if two blankets of same thickness x are used toget...

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  8. A solid sphere of copper of radius R and a hollow sphere of the same m...

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  9. What is "Green House Effect"?

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  10. A sphere, a cube and a circular disc, made of same material and of sam...

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  11. A black platinum wire, when heated, first appears dull red, then yello...

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  12. Why it is advantageous to paint the outer walls and roof of a house wh...

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  13. "Good thermal conductors are also good electrical conductors." Explain...

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  14. Why do some materials, such as glass and metals, usually fell cold and...

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  15. Explain why it is advisable to add water to an overheated automobile e...

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  16. A piece of wood lying in the sun absorbs more heat than a piece of shi...

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  17. A person pours a cup of hot cofee,intending to drink it five minutes l...

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  18. Aluminium foil used for food cooking and storage sometimes has one shi...

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  19. Why must a room air conditioner be placed in a window ? Why can't it j...

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  20. When you step out of a shower bath, you feel cold, bust as soon as you...

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