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A glass flask of volume one litre at $0 ° C$ is filled, level full of mercury at this temperature. The flask and mercury are now heated to $100 ° C$ . How much mercury will spill out, if the coefficient of volume expansion of mercury is $1.82 \times 10^{- 4} {}^{\circ}C^{- 1}$ and linear expansion of glass is $0.1 \times 10^{- 4} {}^{\circ}C^{- 1}$ respectively?

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Important Questions on Thermometry, Thermal Expansion and Calorimetry

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Physics

IMPORTANT

PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 24

A metal ball immersed in alcohol weighs

w_{1}

0 ° C

and

w_{2}

59 ° C

. The coefficient of cubical expansion of the metal is less than that of alcohol. Assuming that the density of the metal is large compared to that of alcohol, it can be shown that

MEDIUM

Physics

IMPORTANT

PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 25

An iron tyre is to be fitted on to a wooden wheel

1 m

in diameter. The diameter of tyre is

6 m m

smaller than that of wheel. The tyre should be heated so that its temperature increases by a minimum of (the coefficient of cubical expansion of iron is

3.6 \times 10^{- 5} {}^{o}C^{- 1}

)

MEDIUM

Physics

IMPORTANT

PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 26

A steel scale measures the length of a copper wire as

80.0 c m

, when both are at

20 ° C

(the calibration temperature for scale). What would be the scale reading for the length of the wire when both are at

40 ° C

? (Given,

α_{s t e e l} = 11 \times 10^{- 6}

° C^{- 1}

and

α_{c o p p e r} = 17 \times 10^{- 6}

° C^{- 1}

)

HARD

Physics

IMPORTANT

PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 27

A piece of metal weighs

46 gm

in air. When it is immersed in a liquid of specific gravity

1.24

27 ° C

, it weighs

30 gm

. When the temperature of the liquid is raised to

42 ° C

, the metal piece weight

30.5 gm

. If the specific gravity of the liquid at

42 ° C

1.20,

then, the linear expansion of the metal will be,

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PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 28

In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures $t_{1}$ and $t_{2}$ . The liquid columns in the two arms have heights $l_{1}$ and $l_{2}$ , respectively. The coefficient of volume expansion of the liquid is equal to

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PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 29

A uniform metallic rod rotates about its perpendicular bisector with constant angular speed. If it is heated uniformly to raise its temperature slightly, then

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IMPORTANT

PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 30

An aluminium sphere is dipped into water. Which of the following is true?

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Physics

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PHYSICS FOR JOINT ENTRANCE EXAMINATION WAVES AND THERMODYNAMICS>Chapter 1 - Thermometry, Thermal Expansion and Calorimetry>Exercises>Q 31

A lead bullet of $10 g$ travelling at $300 m s^{- 1}$ strikes against a block of wood and comes to rest. Assuming $50 %$ of heat is absorbed by the bullet, the increase in its temperature is

(Specific heat of lead, $s = 150 J {kg}^{- 1} K^{- 1}$ )

Important Questions on Thermometry, Thermal Expansion and Calorimetry

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