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AP EAMCET202018 Sep 2020Evening ShiftPhysicsThermal Properties of MatterActual

The temperature of a body is measured both in ( ^ C ) and ( ^ F ). A graph is plotted with ( ^ F ) on (X )-axis and ( ^ C ) on (Y )-axis. Then, the cosine of angle between the graph and the (X )-axis is

Options

  1. A0
  2. B( 9 5 )
  3. C( 5 106 )
  4. D( 9 106 )

Correct answer

D. ( 9 106 )

Step-by-step solution

The relation between celsius scale temperature and fahrenheit scale temperature is given as ( aligned & & C 5 & = F-32 9 & & 9 C & =5 F-160 & & C & = 5 9 F- 160 9 (i) aligned ) The graph between (C ) and (F ) is shown in the figure Comparing Eq. (i) with line (y=m x+C ), we get Slope of graph, (m= = 5 9 ) ( = 9 106 )

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