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“Blue hot is hotter than red hot”. Expla...

“Blue hot is hotter than red hot”. Explain.

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ARIHANT-HEAT TRANSFER-Heat Transfer
  1. A hot body is suspended inside a room that is maintained at a constant...

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  2. Newton’s law of cooling says that the rate of cooling of a body is pro...

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  3. “Blue hot is hotter than red hot”. Explain.

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  4. A planet of radius r(0) is at a distance r from the sun (r gtgt r(0))....

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  5. A star having radius R has a small planet revolving around it at a dis...

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  6. A 20 mm diameter copper pipe is used to carry heated water. The extern...

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  7. Solar constant, I(s) is defined as intensity of solar radiation incide...

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  8. A tapering rod of length L has cross sectional radii of a and b(lt a) ...

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  9. A thick cylindrical shell made of material of thermal conductivity k h...

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  10. A double pan window used for insulating a room thermally from outside ...

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  11. The container A contains ice at O^(@)C. A conducting uniform rod PQ of...

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  12. Two identical adiabatic containers of negligible heat capacity are con...

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  13. A copper slab is 2 mm thick. It is protected by a 2 mm layer of stainl...

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  14. A steel plate is 0.3 m long, 0.1m wide and 0.012 m thick. The plate is...

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  15. A straight cylindrical wire is connected to a battery. The wire is mai...

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  16. A spherical shell is kept in an atmosphere at temperature T(0). The wa...

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  17. A body at a temperature of 50^(@)C cools to 49^(@)C in time Deltat whe...

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  18. A plane surface A is at a constant temperature T(1) = 1000 K. Another ...

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  19. A block is kept in a room which is at 20^(@)C. To raise the temperatur...

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  20. Mass m of a liquid A is kept in a cup and it is at a temperature of 90...

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