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What is a black body ? How can it be rea...

What is a black body ? How can it be realised in practice ?

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Any object that can absorb all incident light is a black body.
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CENGAGE PHYSICS-TRANSFER OF HEAT-MANDATORY EXERCISE (Exercise set I)
  1. Explain the following: On a cold day, metal objects feel colder than...

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  2. Explain the following: It is cool in the shade while it is hot outsi...

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  3. Explain the following: Cooking utensils are often blackened at the b...

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  4. Explain the following: It is more comfortable to wear white clothes ...

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  5. Explain the following: Glass apparatus which is heated by a Bunsen b...

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  6. Explain the following: The panels of a solar water heater are kept s...

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  7. Explain the following: Ventilators are placed high on the walls of t...

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  8. Explain the following: Glass is a suitable material to use in a gree...

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  9. Explain the following: The bit of a soldering iron is made of copper...

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  10. Explain the following: Cloudy nights are hotter.

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  11. Explain the following: You do not burn your fingers when you hold th...

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  12. Explain the following: The basement of a house usually remains cool ...

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  13. Explain the following: Convection is almost impossible in solid bodi...

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  14. Explain the following: In cold countries, the floor is generally mad...

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  15. Explain the following: Ice is preserved by covering it with sawdust.

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  16. If all bodies emit radiation continuously. Why doesn't the temperature...

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  17. On a hot day, a metal object feels hotter than a non metal, why?

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  18. Houses in cold countries have thicker walls. Why?

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  19. If we hold two rods, one is of metal and other is of wood and put one ...

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  20. What is a black body ? How can it be realised in practice ?

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