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A metal rod has a length of 1 m at 30^(@...

A metal rod has a length of 1 m at `30^(@)C.'alpha'` of metal is `2.5xx10^(-5)//""^(@)C`. The temperature at which it will be shortened by 1 mm is

A

`-30^(@)C`

B

`-40^(@)C`

C

`-10^(@)C`

D

`10^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-2
  1. A metal metre scale gives correct measurement at 0^(@)C. It is general...

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  2. The temperature of a thin uniform rod increases by Deltat. If moment o...

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  3. A metal rod has a length of 1 m at 30^(@)C.'alpha' of metal is 2.5xx10...

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  4. Upon heating, the length of the side of a cube changes by 2%. The volu...

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  5. Radius of a sphere is 100 cm at 0^(@)C and 100.1 cm at 100^(@)C. Coeff...

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  6. A brass disc at 0^(@)C has a diameter of 50Cm and a hole of diameter 1...

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  7. Density of a substance at 0^(@)C is 10.6 gm/c.c and at 100^(@)C is 10 ...

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  8. A steel rod of dimesions 4xx4cm^(2) is tightly fixed between two suppo...

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  9. A length of 2m is measured using a metal tape at 10^(@)C. It is calibr...

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  10. A metal tape gives correct measurement at 15^(@)C. It is used to measu...

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  11. A piece of copper wire has a length of 2m at 10^(@)C. Its length at 10...

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  12. A piece of steel has a length of 30 cm at 15^(@)C. At 90^(@)C its leng...

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  13. The density of lead at 0^(@)C is 11.34g//cm^(3). The density of lead a...

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  14. A steel scale is correct at 0^(@)C. The length of a brass tube measure...

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  15. A clock , with a brass pendulum, keeps correct time at 20^(@)C, but lo...

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  16. A steel rod of length 1 m rests on a smooth horizontal base. If it is ...

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  17. A steel ball initially at a pressure of 1.0xx10^(5) Pa is heated from ...

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  18. A vessel is half filled with a liquid at 0^(@)C. When the vessel is he...

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  19. A liquid column of height 80 cm at 0^(@)C balances the same liquid of ...

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  20. gamma(A) of liquid is 7/8 of gamma(R) of liquid. alpha(g) of vessel is

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