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Why are the inner walls of vacuum bottle...

Why are the inner walls of vacuum bottles or thermoes flasks silvered?

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CHETANA PUBLICATION-Kinetic Theory of Gases and Radiation-Exercise
  1. Why are the inner walls of vacuum bottles or thermoes flasks silvered?

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  2. 16 gm of oxygen occupied 0.025 m^3 at 27^@C. It the universal gas cons...

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  3. A cylinder filled with hydrogen gas at 500 K exerts a pressure of 4 at...

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  4. The velocities of three molecules of a gas are 2m//s,3m//s and 4 m//s,...

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  5. Calculate the R.M.S. velocity of helium at temperature 0^@C (density o...

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  6. At what temperature can the R.M.S. velocity of gas be three times its ...

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  7. Calculate the number of molecules in one litre of gas at N.T.P., if ma...

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  8. Find the mass of 10c.c of gas at N.T.P. if RMS.velocity of gas molecul...

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  9. Find the KE per kg of nitrogen molecule at 127^@C (molecular weight of...

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  10. Calculate the R.M.S. velocity of oxygen molecule at N.T.P., if the den...

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  11. If the R.M.S. velocity of oxygen molecules at N.T.P. is 460 m//s, dete...

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  12. The ratio of molar specific heats of certain gas is 1.4, if molar spec...

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  13. Compare the R.M.S. velocity of hydrogen molecules at 400 K with R.M.S....

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  14. Radiant energy is incident on the body at a rate of 1500 J//min. If co...

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  15. Radiant energy is incident on the body at a rate of 1500 J//min. If co...

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  16. Radiant energy is incident on the body at a rate of 1500 J//min. If co...

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  17. A metal cube of each side 0.05 m long emits 0.6k cal in 80 seconds, Ca...

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  18. The emissive power of sphere of area 0.02 m^2 is 0.5 kcal//s-m^2. What...

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  19. The coefficient of absorption of a surface is 0.6. When radiant energy...

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  20. Assuming that the sun radiates as a black body, calculate the energy r...

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  21. The temperature of the filaments of a 100W electric lamp is 2727^@C. T...

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