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JEE Main & Advanced Physics Elasticity Question Bank Youngs Modulus and Breaking Stress

  • question_answer
    To keep constant time, watches are fitted with balance wheel made of                                          [EAMCET 1994]

    A) Invar      

    B)                 Stainless steel

    C)                 Tungsten

    D)                             Platinum

    Correct Answer: A

    Solution :

        Because dimension of invar does not varies with temperature.


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