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Read the following statements
[AMU PMT 2009]
\( S_{1} \) : An object shall weigh more at pole than at equator when weighed by using a physical balance
\( S_{2} \) : It shall weigh the same at pole and equator when weighed by using a physical balance
\( S_{3} \) : It shall weigh the same at pole and equator when weighed by using a spring balance
\( S_{4} \) : It shall weigh more at the pole than at equator when weighed using a spring balance
Which of the above statements is/are correct
(a) \( S_{1} \) and \( S_{2} \)
(b) \( S_{1} \) and \( S_{4} \)
(c) \( S_{2} \) and \( S_{3} \)
(d) \( S_{2} \) and \( S_{4} \)
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