The length of mercury thread when it is at 0°C, 100&d...
The length of mercury thread when it is at 0°C, 100°C and at an unknown temperature θ is 25mm, 225mm and 175mm respectively. The value of θ is
85.0oC
80.0oC
75.0oC
70.0oC
Correct answer is C
175−25225−25=x−0100−0
150200=x100
x=150×100200
= 75°C
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