Multiple choice general knowledge science & technology

Centigrade & Fahrenheit scales give same reading at

  1. 40°

  2. 32°

  3. 273°

  4. 100°
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A Correct answer
Explanation

The Celsius and Fahrenheit scales intersect at -40 degrees, where both scales show the same numerical value. Using the conversion formula F = (9/5)C + 32, substituting -40 for C gives -40 for F as well.

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