Bimetallic strips _______ on heating. Heat transfer in fluids occurs almost entirely by _______ .
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Suppose that, the minimum focal length of eye lens of a person is 2.34 cm. Which lens do you suggest him to correct his defect of vision ?
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When a material is heated, it expands in length by an amount equal to αΔT, where α is the coefficient of linear thermal expansion and ΔT 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.
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