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a thermometer records 680 mmHg at steam point and 440 mmHg at ice point. The...

Physics
WAEC 2010
a thermometer records 680 mmHg at steam point and 440 mmHg at ice point. The temperature it records at 380 mmHg is
  • A. -25oC
  • B. -20oC
  • C. 20oC
  • D. 25oC
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Correct Answer: Option A
Explanation
\(\frac{440 - 380}{680 - 380} = \frac{0 - x}{100 - x}\)

= -25oC
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