Question

What is the change in the temperature on the Fahrenheit scale and on kelvin scale if an iron piece is heated from ${30}^{\circ }$ to ${90}^{\circ }$

• A. ${108}^{\circ }F,60K$
• B. ${100}^{\circ }F,$
• C. ${100}^{\circ }F,65K$
• D. ${60}^{\circ }F,108K$

Answer 1

Answer: (D)

${60}^{\circ }F,108K$

$\Delta \left(inC\right)=\Delta \left(inK\right)$

And, $\Delta \left(inC\right)=\frac{5}{9}\Delta \left(inF\right)$

Given,

$\Delta \left(inC\right)=60=\Delta \left(inK\right)$

And, $\Delta \left(inF\right)=\frac{9}{5}\times 60=108$

Option $\text{A}$ is the correct answer