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(A) : When a Bimetalic strip made up of ...

(A) : When a Bimetalic strip made up of Brass and Iron is heated then brass lies on the convex side.
( R) : Due to lower value of coefficient of linear expansion, brass aquires convex shape.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-IB
  1. (A) : When a circular disc with a hole is heated, the diameter of the ...

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  2. (A) : Steel rods are used in R.C.C. ( R) : Both steel and R.C.C. hav...

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  3. (A) : When a Bimetalic strip made up of Brass and Iron is heated then ...

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  4. (A) : Invar is used in metal tapes, balance wheels and pendulum clocks...

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  5. (A) : A brass disc fits snugly in the hole of the iron plate. To remov...

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  6. (A) : In summer, the pendulum clock runs slow. ( R) : As temperature...

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  7. (A) : A tightly closed metal lid of a glass bottle can be opened more ...

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  8. (A) : A man would feel iron or wooden balls equally hot at 98.4^(@)F. ...

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  9. (A) : Fahrenheit is the smallest unit in the measurement of temperatur...

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  10. (A) : Solids expand on heating. ( R) : Potential energy of the atoms...

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  11. (A) : Solids expand on heating. ( R) : Atoms of the solid are an har...

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  12. (A) : Thermal expansion of solids is due to the anharmonicity of the l...

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  13. (A) : In laying down a railway track a small gap is left between the e...

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  14. (A) : Some times water pipes burst in severe winter. ( R) : On freez...

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  15. (A) : When a strip made of iron and copper is heated it bends with iro...

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  16. (A) : Reading of temperature may be same on Fahrenheit and Kelvin scal...

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  17. (A) : Two bodies at the same temperature may contain different amount ...

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  18. (A) : A clinical thermometer is usually much shorter than a laboratory...

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  19. (A) : A hollow bottle retains its shape when heated. ( R) : When hol...

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  20. (A) : When a solid iron ball is heated, the percentage change in its v...

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