In a mercury thermometer the ice point (lower fixed point) is marked as \( 10^{\circ} \) and the...

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In a mercury thermometer the ice point (lower fixed point) is marked as \( 10^{\circ} \) and the steam point (upper fixed point) is marked as \( 130^{\circ} \). At \( 40^{\circ} \mathrm{C} \) temperature, what will this thermometer read
[WB-JEE 2012]
(a) \( 78^{\circ} \)
(b) \( 66^{\circ} \)
(c) \( 62^{\circ} \)
(d) \( 58^{\circ} \)
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