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A body which has surface area of 5.0 cm^...

A body which has surface area of 5.0 `cm^2` and a temperature of 727 radiates 300j of energy per minute.What is its emissivity?(`sigma=5.67*10^-8 W/m^-2 K^-4`)

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BINA LIBRARY-THERMAL PROPERTIES OF MATTER -EXERCISE
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  3. A body which has surface area of 5.0 cm^2 and a temperature of 727 ra...

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  4. The temperature of abody is increased from 27°C to 127°C. By what fra...

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  7. The temperature of a black body increases from 7°C to 287°C .The rate...

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  8. A black body has maximum omega. L.lambda m at 2000K.Its corresponding ...

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  9. Two spheres made of same meterial have radii in the ratio 1:2 both are...

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  10. A body cools from 60°C to 50°C in 10 min.if room temperature is 25°C...

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  11. A body cools from 50°C to 40°C in 5 min .Its temperature comes down t...

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  12. There is a small hole at the centre of meta disc.On heating the size o...

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  13. If a bimetallic strip made of iron and copper is heated ,then

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  14. Which of the following is a correct relation for soilds?

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  15. Sometimes ,a cycle with well inflated tyres left in sun,has its tube b...

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  16. Two spheres of same size are made of same metal but one is hollow and ...

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  17. Which of the following has the highest specific heat capacity?

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  18. Water is used in hot water bottels,because

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  19. For a gram-molecule of an ideal gas (PV)/T is

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  20. Water equivalent of a substance is equal to

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