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Mud houses are cooler in summer and warm...

Mud houses are cooler in summer and warmer in winter because

A

mud is a good conductor of heat

B

mud is a superconductor of heat

C

mud is a bad conductor of heat

D

none of these

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Mr. X was advised by an architect to make outer walls of his house with hollow bricks . The correct reason is that such walls (a) make the building stronger (b) Help keeping inside cooler in summer and warmer in winter (c ) Prevent seepage of moisture from outside (d) Protect the building from lightning

Statement: I. Mud houses are cooler in summers than stone-and-brick houses. II. Mud houses are occupied by the poor only. Conclusions: I. Poor people are more comfortable in summers than the rich. II. Stone-and-brick houses are more sophisticated than mud houses.

SL ARORA-Thermal Properties of Matter-Exercise
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  2. Three rods of same dimensions have thermal conductivities 3K, 2k and K...

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

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

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  9. Emissive power of a perfectly black body

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  10. Which of the following statements is wrong ?

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  11. Unit of Stefan's constant is

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

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

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

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  16. A body at a temperature of 727^(@)C and having surface area 5 cm^(2), ...

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