If a bimetallic strip is heated it will

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10-1.Thermometry, Thermal Expansion and Calorimetry

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If a bimetallic strip is heated it will

Bend towards the metal with lower thermal expansion coefficient.

Bend towards the metal with higher thermal expansion coefficient.

Not bend at all

Twist itself into a helix

Solution

When a material is heated, it expands in length by an amount equal to $\alpha \Delta T$, where $\alpha$ is the coefficient of linear thermal expansion and $\Delta T$ is the change in temperature.

The metal which expands the most will therefore be the one which has the largest coefficient of linear thermal expansion. a bimetallic strip is heated it will bend towards the metal with lower thermal expansion coefficient.

Standard 11

Physics

The density of water at $20^oC$ is $0.998\, gm/cm^3$ and at $40^oC$ is $0.992\, gm/cm^3$. The mean coefficient of cubical expansion (in per $^oC$) is :-

normal

$1\, kg$ of ice at $-10\,^oC$ is mixed with $4.4\, kg$ of water at $30\,^oC$. The final temperature of mixture is …….. $^oC$ (specific heat of ice is $2100\, J/kg/k$)

normal

‘Stem Correction’ in platinum resistance thermometers are eliminated by the use of

normal

(AIIMS-1998)

The temperature of a body on Kelvin scale is found to be $X\;K$. When it is measured by a Fahrenheit thermometer, it is found to be ${X^0}F$. Then $X$ is

normal

Suppose there is a hole in a copper plate. On heating the plate, diameter of hole, would

normal

If a bimetallic strip is heated it will

Solution

Similar Questions

The density of water at $20^oC$ is $0.998\, gm/cm^3$ and at $40^oC$ is $0.992\, gm/cm^3$. The mean coefficient of cubical expansion (in per $^oC$) is :-

$1\, kg$ of ice at $-10\,^oC$ is mixed with $4.4\, kg$ of water at $30\,^oC$. The final temperature of mixture is …….. $^oC$ (specific heat of ice is $2100\, J/kg/k$)

‘Stem Correction’ in platinum resistance thermometers are eliminated by the use of

The temperature of a body on Kelvin scale is found to be $X\;K$. When it is measured by a Fahrenheit thermometer, it is found to be ${X^0}F$. Then $X$ is

Suppose there is a hole in a copper plate. On heating the plate, diameter of hole, would

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