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COMEDK2015PhysicsThermal Properties of Matter

The temperature at which centigrade and Fahrenheit scales give the same reading, is

Options

  1. A-40^
  2. B40^
  3. C-30^
  4. D30^

Correct answer

A. -40^

Step-by-step solution

Using relation, F-32 180 = C 100 ...(i) If F=C=x , then substituting value of Eq . (i), we get array ll & x-32 180 = x 100 x 5 = x-32 9 & 9 x=5 x-160 160=-4 x & x=-40^ array This is the required temperature at which centigrade and Fahrenheit scale give same reading.

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