Multiple choice general knowledge science & technology

Centigrade & Fahrenheit scales give same reading at

    • 40°
    • 32°
    • 273°
    • 100°
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A Correct answer
Explanation

The Centigrade (Celsius) and Fahrenheit scales give the same reading at -40 degrees. This can be derived from the conversion formula F = (9/5)C + 32. Setting F = C gives C = (9/5)C + 32, which solves to C = -40. -32F is 0C (freezing point of water), -273C is absolute zero, and -100F is about -73C.

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