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Which of the following is more close to ...

Which of the following is more close to a black body?

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A
Black board paint is more close to a black body.
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ALLEN-GEOMETRICAL OPTICS-EXERCISE - 05 (A)
  1. An open glass tube is immersed in mercury in such a way that a length ...

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  2. Heat given to a body which raises its temperature by 1^@C is

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  3. Which of the following is more close to a black body?

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  4. Infrared radiation is detected by

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  5. Two spheres of the same material have radii 1 m and 4 m, temperature 4...

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  6. If the temperature of the Sun were to increase from T to 2T and its ...

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  7. The temperature of the two outer surfaces of a composite slab, consist...

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  8. The figure shows a system of two concentric spheres of radii r(1), and...

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  9. Assuming the sun to be a spherical body of radius R at a temperature o...

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  10. One end of a thermally insulated rod is kept at a temperature T(1) and...

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  11. A long metallic bar is carrying heat from one its ends to the other en...

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  12. A liquid in a beaker has temperature theta(t) at time t and theta(0) i...

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  13. If a piece of metal is heated to temperature theta and then allowed to...

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  14. One mole of diatomic ideal gas undergoes a cyclic process ABC as shown...

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  15. Three rods of Copper, Brass and Steel are welded together to from a Y ...

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  16. Cooking gas containers are kept in a lorry moving with uniform speed. ...

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  17. At what temperature is the rms velocity of a hydrogen molecule equal t...

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  18. 1 mole of a gas with lamda=7/5 is mixed with 1 mole of gas with lamda=...

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  19. During an adiabatic process, the pressure of gas is found to be propor...

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  20. One mole of ideal monoatomic gas (gamma=5//3) is mixed with one mole o...

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