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A hot body will radiate heat most rapidl...

A hot body will radiate heat most rapidly if its surface is:

A

White and rough

B

Black and rough

C

White and polished

D

Silver polished

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AAKASH INSTITUTE ENGLISH-TEST 5-EXAMPLE
  1. On the opposite sides of vertical vessel filled with water, two identi...

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  2. A hot body will radiate heat most rapidly if its surface is:

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  3. The wavelength corresponding to maximum intensity of radiation emitted...

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

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  5. The temperature of a body falls from 40^°C to 30^°C in 10 minutes. If ...

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  6. Find the temperature of junction at B, if each rod has equal area of c...

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  7. Two bar of identical dimensions are kept as shown in figure. If K1 and...

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  8. Two gases 1 02' and 'He' expand for same volume difference at constant...

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  9. A gas undergoes a process in which its pressure P and volume V are rel...

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  10. p-V diagram of a diatomic gas is a straight line passing through origi...

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  11. A Carnot engine takes 10^6 cal of heat from a reservoir at 627^°C and ...

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  12. A monoatomic gas is compressed adiabatically to 8/27 of its initial vo...

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  13. A sample of ideal gas (y = 1 .4) is heated at constant pressure. If an...

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  14. If gas expands according to relation P = 4 V, then work done in expans...

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  15. When a process is taken from process abc 100 J of heat is absorbed by ...

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  16. Two moles of an ideal monatomic gas is heated at constant pressure so ...

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  17. Two liquids at different temperature are mixed in a calorimeter of zer...

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  18. Boiling water is changing into steam. Under this condition the specifi...

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  19. A 5 g piece of ice at —20^° C is put into 10 g of water at 30^° C. The...

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  20. When water is heated from O^°C to 10^°C, its density

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