(B) When a metal sheet is heated,it undergoes thermal expansion. For an isotropic solid,the expansion is similar to a photographic enlargement,meaning

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both $d_1$ and $d_2$ will increase

(B) When a metal sheet is heated,it undergoes thermal expansion. For an isotropic solid,the expansion is similar to a photographic enlargement,meaning every part of the object,including the holes,expands in the same proportion. Therefore,the distance between any two points on the sheet increases,which implies that the diameters of the holes ($d_1$ and $d_2$) will also increase.

Class 11 Physics 10-1.Thermometry, Thermal Expansion and Calorimetry Thermal Expansion for Solid

Medium

Two holes of unequal diameters $d_1$ and $d_2$ $(d_1 > d_2)$ are cut in a metal sheet. If the sheet is heated,then:

A
both $d_1$ and $d_2$ will decrease
B
both $d_1$ and $d_2$ will increase
C
$d_1$ will increase,$d_2$ will decrease
D
$d_1$ will decrease,$d_2$ will increase

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10-1.Thermometry, Thermal Expansion and Calorimetry

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Thermal Expansion for Solid

The ratio of linear expansivity to the coefficient of superficial expansion of a rectangular sheet of a solid is

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If a bimetallic strip is heated, it will

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$A$ pendulum clock keeps correct time at $0\,^{\circ}C$. The thermal coefficient of linear expansion of the material of the pendulum is $\alpha$. If the temperature rises to $t\,^{\circ}C$,then the clock loses per day by (in seconds):

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$A$ rod of length $2 \ m$ at $0^\circ C$ has a linear expansion coefficient $\alpha = (3x + 2) \times 10^{-6} \ ^\circ C^{-1}$,where $x$ is the distance (in $cm$) from one end of the rod. Find the length of the rod at $20^\circ C$ in meters.

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When a body is heated, then the maximum rise will be in its

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Two holes of unequal diameters $d_1$ and $d_2$ $(d_1 > d_2)$ are cut in a metal sheet. If the sheet is heated,then:

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The ratio of linear expansivity to the coefficient of superficial expansion of a rectangular sheet of a solid is

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$A$ pendulum clock keeps correct time at $0\,^{\circ}C$. The thermal coefficient of linear expansion of the material of the pendulum is $\alpha$. If the temperature rises to $t\,^{\circ}C$,then the clock loses per day by (in seconds):

$A$ rod of length $2 \ m$ at $0^\circ C$ has a linear expansion coefficient $\alpha = (3x + 2) \times 10^{-6} \ ^\circ C^{-1}$,where $x$ is the distance (in $cm$) from one end of the rod. Find the length of the rod at $20^\circ C$ in meters.

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