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A black platinum wire, when heated, firs...

A black platinum wire, when heated, first appears dull red, then yellow, then blue and finally white. Explain.

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SL ARORA-Thermal Properties of Matter-Exercise
  1. Assertion : The earth without its atmosphere would be inhospitably col...

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  2. A sphere, a cube and a thin circular plate all made of the same materi...

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

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  4. What are the SI and cgs units of heat? How are they related?

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  5. Define temperature.

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  6. THERMOMETRY

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  7. The temperature of a gas is increased by 10^@C. What is the correspond...

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  8. What is the correct value of 0^(@) C on the Kelvin scale?

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  9. At what temperature will both celsius and fahrenheit scales read the s...

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  10. What is the triple point of water on a Fahrenheit scale ? What is the ...

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  11. The absolute zero temperature in Fahrenheit scale is

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  12. A constant volume gas thermometer works on

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  13. One quality of a thermometer is that its heat capacity should be small...

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  14. The absolute zero temperature in Fahrenheit scale is

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  15. Two bodies A and B are said to be in thermal equilibrium with each oth...

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  16. Of metals and alloys, which has greater value of temperature co-effici...

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  17. Define three coefficeints of thermal expansion. Establish relation bet...

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  18. On heating a liquid of coefficient of cubical expansion gamma in a con...

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  19. A long metal rod is bent to form a ring with a small gap if this is he...

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  20. Why is it difficult to measure the coefficient of expansion ofa liquid...

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