The ice point of an ungraduated mercury-in-glass thermometer is X, while its steam point is…

Physics WAEC 1999

The ice point of an ungraduated mercury-in-glass thermometer is X, while its steam point is 90o. This thermometer reads 60o when the true temperature is 40oC Calculate the value of X.

  • 60o
  • 48o
  • 40o checkmark
  • 30o

The correct answer is: C

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