Question
Convert 40°C to the (a) Fahrenheit scale (b) Kelvin Scale.
✓
Answer
(a) Fahrenheit scale
C = 40°C
Substitute value of C = 40° in below equation
$
\begin{aligned}
& \frac{C}{5}=\frac{F-32}{9} \\
& \frac{40}{5}=\frac{F-32}{9} \\
& 8=\frac{F-32}{9} \\
& 8 \times 9=F-32 \\
& 72=F-32 \\
& F=72+32=104
\end{aligned}
$
Solution $=104^{\circ} \mathrm{F}$
(B) t° C = (273 + t ) K
Given t = 40° c
Substitute the value of t in above equation
40°C = (273 + 40) K
40° C = 313 K
Solution = 313 k
C = 40°C
Substitute value of C = 40° in below equation
$
\begin{aligned}
& \frac{C}{5}=\frac{F-32}{9} \\
& \frac{40}{5}=\frac{F-32}{9} \\
& 8=\frac{F-32}{9} \\
& 8 \times 9=F-32 \\
& 72=F-32 \\
& F=72+32=104
\end{aligned}
$
Solution $=104^{\circ} \mathrm{F}$
(B) t° C = (273 + t ) K
Given t = 40° c
Substitute the value of t in above equation
40°C = (273 + 40) K
40° C = 313 K
Solution = 313 k
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Look at the following figures and identify the colour of appearance of each surface.
“Poles exist in pair”. Comment on this statement ?
A car travels a distance of $15$ km in $20$ minute. Find the speed of the car in $km h ^{-1}$.
→Describe an experiment to verify the laws of reflection of light. Ans. Laws of reflection.
Draw a labelled diagram to make a soft iron bar as an electromagnet. Describe in steps the procedure ?
Can sound travel through a vacuum ? Describe an experiment to explain your answer.
Identify the different forms of energy possessed by the bodies given in the following pictures.
State two smaller units of volume. How are they related to the S.I. unit?
A car travels a distance of 15 km in 20 minute. Find the speed of the car in $m s ^{-1}$.
→Explain the following terms:
Incident ray, Reflected ray, Angle of incidence, Angle of reflection, Normal.
Incident ray, Reflected ray, Angle of incidence, Angle of reflection, Normal.