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The layers of atmosphere are heated thro...

The layers of atmosphere are heated through

A

Convection

B

Conduction

C

Radiation

D

Both (1) and (3)

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE ENGLISH-THERMAL PROPERTIES OF MATTER-Assignment (Section-A) Objective Type questions (one option is correct)
  1. The dimensions of thermal resistance are

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  2. The temperature of water at the surface of a deep lake is 2^@C. The te...

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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. A cylindrical rod having temperature T1 and T2 at its end. The rate of...

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  5. A slab consists of two parallel layers of two different materials of s...

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  6. The layers of atmosphere are heated through

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  7. The temperarture gradient in a rod of 0.5 m long is 80^(@)Cm^(-1). If ...

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  8. The ratio of the thermal conductivities of two different materials is ...

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  9. Five rods of same dimensions are arranged as shown in figyre. They hav...

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  10. In heat transfer, which method is based on gravitation?

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  11. In which process, the rate of transfer of heat is maximum ?

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  12. Good absorbers of heat are

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  13. A body, which emits radiations of all possible wavelengths, is known a...

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  14. A hot and a cold bofy are kept in vacuum seperated from eavh other. Wh...

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  15. According to ‘Newton’s Law of cooling’, the rate of cooling of a body ...

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  16. A liquid cools down from 70^(@)C to 60^(@)C in 5 minutes. The time tak...

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  17. If a metallic sphere gets cooled from 62^(@)C to 50^(@)C in minutes ...

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  18. Newton's law of cooling is used in laboratory for the determination of...

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  19. It takes 10 minutes to cool a liquid from 61^(@)C to 59^(@)C. If room ...

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  20. A block of metal is heated to a temperature much higher than the room ...

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