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A body of length 1 m having cross sectio...

A body of length `1 m` having cross sectional area `0.75 m^(2)` has heat flow through it at the rate of `6000 "Joule"//sec`. Then find the temperature difference if `K = 200 Jm^(-1) K^(-1)`.

A

`20^@C`

B

`40^@C`

C

`80^@C`

D

`100^@C`

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SL ARORA-Thermal Properties of Matter-Exercise
  1. The unit of thermal conductivity is :

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  2. The temperature gradient in a rod of 0.5 m long is 80^(@)C//m. If the ...

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  3. A body of length 1 m having cross sectional area 0.75 m^(2) has heat f...

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  4. Two rods of length d(1) and d(2) and coefficients of thermal conductiv...

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  5. Two rods are of same material and having same length and area. If heat...

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  6. The ratio of thermal conductivity of two rods of different material is...

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  7. Two rods having thermal conductivity in the ratio of 5 : 3 having equa...

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  8. Three rods of same dimensions have thermal conductivities 3K, 2k and K...

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  9. Mud houses are cooler in summer and warmer in winter because

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  10. PERFECTLY BLACK BODY

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  11. Three objects coloured black, gray and white can withstand hostile con...

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  12. The rate of cooling at 600 K, if surrounding temperature is 300 K is R...

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  13. A body initially at 80^(@)C cools to 64^(@)C in 5 minutes and to 52^(@...

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  14. The temperature of a room heated by heater is 20^@C when outside tempe...

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  15. Emissive power of a perfectly black body

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  16. Which of the following statements is wrong ?

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  17. Unit of Stefan's constant is

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  18. Two bodies are at temperature 27^(@) and 927^(@)C. The heat energy rad...

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  19. A black body radiates energy at the rate of 1 xx 10^(5) J // s xx m at...

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  20. Temperature of a black body increases from 327^(@)C to 927^(@)C, the ...

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