The graph AB shown in figure is a plot of temperature of a …

Physics Thermometry, Thermal Expansion and Calorimetry Mix Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: September 12, 2026

The graph AB shown in figure is a plot of temperature of a body in degree Celsius and degree Fahrenheit. Then

Slope of line AB is 9/5

Slope of line AB is 5/9

Slope of line AB is 1/9

Slope of line AB is 3/9

Text Solution

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The correct answer is:

Relation between Celsius and Fahrenheit scale of temperature is $\frac{C}{5} = \frac{F - 32}{9}$ ⇒ ⇒ C = $\frac{5}{9}F - \frac{160}{9}$

Equating above equation with standard equation of line y = mx + c we get slope of the line AB is $m = -\frac{5}{9}$

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