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Explain the working of thermos flask wit...

Explain the working of thermos flask with a diagram.

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SURA PUBLICATION-Heat-Example
  1. With the help of a neat diagram explain the working of a calorimter.

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  2. Write a note on thermostat.

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  3. Explain the working of thermos flask with a diagram.

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  4. Why does the bottom of a lake not freeze in severe winter even when th...

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  5. Which one of the following ststements about thermal conductivity is co...

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  6. An iron ball requires 1000 J of heat to raise its temperature by 20^@C...

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  7. The heat capacity of the vessel of mass 100 kg is 8000 J//^@C. Find it...

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  8. Heat is the transfer of energy between two objects with different temp...

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  9. When ice changes into a liquid, it absorbs energy.

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  10. Heat energy flows from a body at low temperature to a body at higher t...

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  11. J// Kg ^@C is the unit of specific heat capacity.

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  12. Conductors have generally high specific head capactities and insulator...

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  13. Temperature is a measure of total kinetic energy of the particles in a...

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  14. When a liquid evaporates. it gives off energy.

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  15. when a liquid boils, energy is absorbed.

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  16. What has the lowest specific heat capacity.

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  17. While a substance is undergoin a change of state, the temperature of t...

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  18. In summer, we prefer light- coloured clothes and in winter we usually ...

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  19. The transfer of heat by radiation does not require any medium.

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  20. Metals like copper, heat by radiation does not require any medium.

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