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A steel rod of dimesions 4xx4cm^(2) is t...

A steel rod of dimesions `4xx4cm^(2)` is tightly fixed between two supports and is not allowed to expand. It is heated through `2^(@)C`. Thermal stress developed is ___ `10^(6)N//m^(2)`
`(Y=20xx10^(10)N//m^(2)" "alpha=18xx10^(-6)//,C)`

A

7.2

B

2.7

C

3.6

D

0.72

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-2
  1. A brass disc at 0^(@)C has a diameter of 50Cm and a hole of diameter 1...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  16. Coefficient of real expansion of a liquid is 0.000182//""^(@)C. If coe...

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  17. Co-efficient of apparent expansions of a liquid in Gold vessel is G an...

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  18. A liquid occupies half of a vessel at a particular temperature. The vo...

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  19. Densities of a liquid at 30^(@)Cand80^(@)C are 0.6gm/c.c and 0.54 gm/c...

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  20. The value of coefficient of volume expansion of glycerine is 5xx10^(-4...

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