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Four identical rods of same material are joined end to end to form a square. If the temperature difference between the
\( \mathrm{P} \) ends of a diagonal is \( 100^{\circ} \mathrm{C} \), then the temperature difference between the ends of other diagonal will be
W
[MP PET 1989; RPMT 2002]
(a) \( 0^{\circ} \mathrm{C} \)
(b) \( \frac{100}{1}{ }^{\circ} \mathrm{C} \); where \( I \) is the length of each rod
(c) \( \frac{100}{21}{ }^{\circ} \mathrm{C} \)
(d) \( 100^{\circ} \mathrm{C} \)
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