On centigrade scale temperature of a body increases by 30 degrees. increase in temperature on Fahren

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10-1.Thermometry, Thermal Expansion and Calorimetry

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On centigrade scale the temperature of a body increases by $30$ degrees. The increase in temperature on Fahrenheit scale is ..............

A

$50$

B

$40$

C

$30$

D

$54$

Solution

(d)

$F=\frac{9}{5}\,C+32$

So, $F_1=\frac{9}{5}\,C_1+32$ and $F_2=\frac{9}{5}\,C_2+32$

$F_1-F_2=\frac{9}{5}\left(C_1-C_2\right)=\frac{9}{5}(30)=54^{\circ}\,F$.

Standard 11

Physics

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