Question

-40 degrees Fahrenheit is equal to how many degrees on the Celsius scale?
1. + 40
2. – 32
3. – 40
4. 0

Answer 1

Correct Answer - Option 3 : – 40

The correct answer is – 40.

• -40 degrees is the temperature that shows the same measurement in Celsius and Fahrenheit scales.
• On a Fahrenheit scale, the intervals between the ice point and the steam point are divided into 180 equal parts.
• The following mathematical equation is used to convert the Fahrenheit scale(F) to Celsius scale(C):
  • \(C=(F -32)\times {5\over9}\)
• Given that;
  • F= -40.
  • Substitute the value of F in the above equation:
  • \(C=(-40 -32)\times {5\over9}\)
  • \(C=(-72)\times {5\over9}\)
  • \(C= -40\).
• -40 degrees Fahrenheit is equal to -40 degrees Celsius.
• -574.25 degrees is the temperature that shows the same measurement in Kelvin and Fahrenheit scales.