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A body cools from 80°C to 50°C in 5 mi...

A body cools from 80°C to 50°C in 5 minutes.If the temperature of the surrounding is 20°C ,Calculate the time it takes to cool from 60°C to 30°C .

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

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

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  3. A body cools from 80°C to 50°C in 5 minutes.If the temperature of th...

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  4. Two vessels of different materials are similar in size in every respec...

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

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

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

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

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

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

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

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

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

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

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

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  16. Water is used in hot water bottels,because

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

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  18. Water equivalent of a substance is equal to

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  19. The unit of thermal capacity is

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  20. Specific heat of body depends upon

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