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Which of the following is a better refle...

Which of the following is a better reflector of heat and which one is a better absorber of heat ?
(a) Shiny white surface (b) Dull black surface

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To determine which surface is a better reflector of heat and which is a better absorber of heat, we can analyze the properties of the two surfaces given in the question: shiny white surface and dull black surface. ### Step-by-Step Solution: 1. **Understanding Reflectivity and Absorptivity**: - Reflectivity refers to the ability of a surface to reflect heat or light. A surface that reflects most of the heat will not absorb much of it. - Absorptivity refers to the ability of a surface to absorb heat. A surface that absorbs heat will heat up more quickly. ...
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LAKHMIR SINGH & MANJIT KAUR-HEAT-EXERCISE
  1. When we stand next to a burning fire, we can feel the heat on our face...

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  2. A hot utensil (filled with hot water) kept away from flame cools down ...

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  3. Which of the following is a better reflector of heat and which one is ...

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  4. Fill in the following blanks with suitable words : A cold steel spo...

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  5. Fill in the following blanks with suitable words : In solids, heat ...

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  6. Fill in the following blanks with suitable words : The two examples...

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  7. Fill in the following blanks with suitable words : Air is a conduc...

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  8. Fill in the following blanks with suitable words : Feathers and fur...

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  9. Fill in the following blanks with suitable words : The hotness of an...

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  10. Fill in the following blanks with suitable words : Temperature is m...

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  11. Fill in the following blanks with suitable words : Temperature of b...

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  12. Fill in the following blanks with suitable words : No medium is req...

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  13. Fill in the following blanks with suitable words : In liquids and ga...

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  14. Why is a frying pan made of metal (like aluminium or stainless steel) ...

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  15. Why are cooking utensils provided with handles made of plastic (or woo...

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  16. A versatile anther is an adaptation for ……….. Type of pollination.

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  17. Why does the mercury level not fall on its own when the bulb of a clin...

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  18. Define conduction. Give one example where heat is transferred by the p...

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  19. An example of peripheral equipment is the:

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  20. What is meant by good conductors of heat ?Give examples of two materia...

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