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A sphere, a cube and a circular disc, ma...

A sphere, a cube and a circular disc, made of same material and of same mass are heated to same temperature and placed in same surrounding. Which one will have fastest rate of cooling and which one will have slowest ?

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PHYSICS GALAXY - ASHISH ARORA-HEAT TRANSFER -Discussion Question
  1. Why a thermos flask has its interior surface mirror like polished.

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

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

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

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

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

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  7. What is "Green House Effect"?

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

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

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

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

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

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

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

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

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

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

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

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  19. Ice is slippery to walk on and is especially slippery if you wear ice ...

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  20. Even when a lake freezes in winters, how do the animals survive deep i...

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