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The thermal radiation emitted by a body ...

The thermal radiation emitted by a body is proportional to `T^(n)` where T is its absolute temperature. The value of n is exactly 4 for

A

A blackbody

B

All bodies

C

Bodies painted black only

D

Polished bodies only

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The correct Answer is:
B
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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-IA
  1. According to Newton's law of cooling, the rate of cooling of a body is...

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  2. A solid at temperature T(1) is kept in an evacuated chamber at tempera...

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  3. The thermal radiation emitted by a body is proportional to T^(n) where...

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  4. Newton's law of cooling is a special case of

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  5. A hot liquid is kept in a big room. The logarithm of the numerical val...

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  6. One end of a metal rod is dipped in boiling water and the other is dip...

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  7. In summer, a mild wind is often found on the shore of a calm river. Th...

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  8. Three discs, A, B and C having radii 2 m, 4 m and 6 m respectively are...

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  9. Liquid oxygen at 50 K is heated to 300 K at constant pressure of 1 atm...

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  10. In which of the following process, convection does not take place prim...

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  11. Heat is associated with

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  12. 'Gulab Jamuns' (assumed to be spherical) are to be heated in an oven. ...

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  13. A manufacturer wishes to design a thermo meter so that the mercury mus...

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  14. In which of the following pairs of temperature scales, the size of a d...

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  15. Pick up the correct statement a) Sun's temperature is measured by a ...

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  16. Mark the correct options: a) A system X is in thermal equilibrium wi...

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  17. When a rod is heated, its linear expansion depends on (a) Initial le...

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  18. The numerical value of coefficient of linear expansion is independent ...

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  19. Expansion during heating (a) occurs in solids only (b) causes decr...

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  20. When a copper solid sphere is heated, its (a) moment of inertia incr...

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