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Two thin metal strips, one of brass and the other of iron are fastened together parallel to each other. Thickness of each strip is 1 mm. If the strips are of equal length at `0^(@)C`. The radius of the are formed by the bimetallic strip when heated to `80^(@)C` is (Coefficient of linear expansion of brass = `19xx10^(-6)//""^(@)C` & of iron = `12xx10^(-6)//""^(@)C`).

A

1.78 m

B

2.67 m

C

3.12 m

D

4.56 m

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A
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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-3
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  2. A thin circular metal disc of radius 500mm is set rotating about a cen...

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  3. Two thin metal strips, one of brass and the other of iron are fastened...

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  4. A wire of length L(0) is supplied heat to raise its temperature by T. ...

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  5. A mercury thermometer contains 2c.c. of Hg. At 0^(@)C. Distance betwee...

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  6. Volume of mercury in the bulb of a thermometer is 10^(-6)m^(3). Area o...

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  7. A vessel contains a liquid filled with 1/10th of its volume. Another v...

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  8. coefficient of real expansion of mercury is 0.18xx10^(-3)//""^(@)C. If...

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  9. Density of a liquid at 0^(@)C is 13.6 gm/c.c., and its coefficient of ...

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  10. A glass bulb of volume 250 c.c is completely filled with mercury at 20...

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  11. The densities of wood and benzene at 0^(@)C are 880 kg m^(-3) and 900 ...

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  12. A vertical glass tube, closed at the bottom contains mercury to a heig...

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  13. Two liquids P and Q of masses 103 gr and 204 gr are heated. Then 3 gr ...

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  14. A solid whose volume does not change with temperature, floats in a liq...

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  15. A spherical shell of copper is completely filled with a liquid at a te...

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  16. One litre of helium gas at a pressure of 76 cm-Hg and temperature 27^@...

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  17. At air bubble of volume V(0) is released by a fish at a depth h in a l...

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  18. The pressure and temperature of an ideal gas in a closed vessel are 72...

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  19. 2gm of monoatomic gas occupies 2 litre volume at 8.3xx10^(5) pascal an...

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  20. An ideal gas is trapped between a mercury column and the closed end of...

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