The coefficient of linear expansion of a solid is experimentally determined by :
A
Searles method
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B
Conjugate foci method
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C
Spherometer method
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D
Regnaults method
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Solution
The correct option is A Spherometer method Spherometer is used to measure the length of a sample at two different temperatures. Noting the initial length, change in length and change in temperature, coefficient of linear expansion is calculated.