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Solids expand on heating because...

Solids expand on heating because

A

kinetic energy of atom increases

B

Potential energy of atom increases

C

Total energy of atom increases

D

The potential energy curve is asymetric about the equilbrium distance between neighbouring atoms

Text Solution

Verified by Experts

The correct Answer is:
D
Potential energy curve of atoms is shown in figure. It is assymetric so when temperature increases vibration about mean position becomes longer in one side so average distance increases between the atoms.
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DC PANDEY ENGLISH-THERMOMETRY THERMAL EXPANSION AND KINETIC THEORY OF GASES-Check point 14.2
  1. A solid metal ball has a spherical cavity. If the ball is heated, the ...

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  2. The ratio among coefficient of volume expansion, superficial expansion...

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  3. Bimetal strips are used for

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  4. The temperature of a physical pendulum, whose time period is T, is rai...

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  5. On heating a liquid having coefficient of volume expension alpha in a ...

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  6. A metal sheet with a circular hole is heated. The hole

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  7. A beaker is completely filled with water at 4^(@)C. It will overflow i...

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  8. A bar of iron is 10 cm at 20^(@)C. At 19^(@)C it will be (alpha of iro...

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  9. A steel tape gives corrent measurement at 20^(@)C. A piece of wood is ...

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  10. Two rods of length l(1) and l(2) are made of material whose coefficien...

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  11. The radius of a ring is R and its coefficient of linear expansion is a...

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  12. If two rods of length L and 2L having coefficients of linear expansion...

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  13. A metal rod of length 100cm, made of silver at 0^(@)C is heated to 100...

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  14. A uniform metal rod is used as a bar pendulum. If the room temperature...

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  15. Two rods of different materials having coefficient of thermal expansio...

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  16. Coefficient of volume expansion of mercury is 0.18xx10^(-3)//.^(@)C. I...

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  17. A glass flask of volume 200cm^(3) is just filled with mercury at 20^(@...

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  18. Solids expand on heating because

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  19. The coefficient of linear expansion of crystal in one direction is alp...

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  20. A steel rod of diameter 10 mm is clamped firmly at each end when its t...

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