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.Management Sciences
A. their atoms collide frequently
B. their atoms-are relatively far apart
C. they contain free electrons
D. they have high density
E. all of the above
Related Mcqs:
- Heat transfer in liquid and gases takes place by_____________________?
- A. conduction B. convection C. radiation D. conduction and convection E. convection and radiation...
- The amount of heat flow through a body by conduction is_______________?
- A. directly proportional to the surface area of the body B. directly proportional to the temperature difference on the two faces of the body C. dependent upon the material of the body D. inversely proportional to the thickness of the body E. all of the above...
- According of Kirchhoff’s law______________________?
- A. radiant heat is proportional to fourth power of absolute temperature B. emissive power depends on temperature C. emissive power and absorptivity are constant for all bodies D. ratio of emissive power to absorptive power is maximum for perfectly black body E. ratio of emissive power to absorptive power for all bodies is same and … According of Kirchhoff’s law______________________?Read More...
- According to Stefan-Boltzmann law, ideal radiators emit radiant energy at a rate proportional to___________________?
- A. absolute temperature B. square of temperature C. fourth power of absolute temperature D. fourth power of temperature E. cube of absolute temperature...
- According to Stefan’s law, the total radiation from a black body per second per unit area is proportional to____________________?
- A. absolute temperature B. T2 C. T5 D. t E. l/T...
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