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Question
To keep correct time modern watches are fitted with balance wheel made of
To keep correct time modern watches are fitted with balance wheel made of
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Solution
The correct option is C invar
To keep correct time modern watches are fitted with balance wheel made of Invar metal. Because it has very low thermal expansion coefficient compared Steel, Platinum, and Tungsten.
Option (C) is the correct answer.
To keep correct time modern watches are fitted with balance wheel made of Invar metal. Because it has very low thermal expansion coefficient compared Steel, Platinum, and Tungsten.
Option (C) is the correct answer.
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