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Define temperature gradient....

Define temperature gradient.

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CHETANA PUBLICATION-THERMAL PROPERTIES OF MATTER-EXERCISE
  1. What is thermal conductivity?

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  2. What is meant by "steady state"?

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  3. Define temperature gradient.

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  4. Derive an expression for coefficient of thermal conductivity of a mate...

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  5. Define coefficient of thermal conductivity. State its MKS unit

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  6. What ismeant by "thermal resistance"?Explain. State its SI unit and di...

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  7. Describe three applications of thermal conductivity

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  8. Give reason, why (i)Cooking is difficult at high altitude.

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  9. Give reason, why (ii)Cooking is faster in a pressure cooker.

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  10. Find the temperature difference between two sides of a steel plate 4 c...

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  11. What is the difference between boiling and evaporation?

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  12. Explain the process of heat transfer by convection.

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  13. Explain the following application of convection. (1) Heating and coo...

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  14. Explain the following application of convection. (2) Cooling of tran...

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  15. State some applications of convection.

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  16. What is meant by " free convection" and " forced convection".

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  17. What is "radiation"? Explain "heat transfer by radiation".

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  18. What is "Newton's law of cooling"? Explain.

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  19. A metal sphere cools from 80^@C to 60^@C in 6 minutes. How much time w...

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  20. If 50 gm of water at 0^@C is added to 250 gm of water at 90^@C. Find t...

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