Question

If the Celsius temperature $ 20 $ degrees $ C $ what is the Fahrenheit temperature $ (F) $ ?

Answer 1

Hint: Degree Celsius and Fahrenheit are both relative scales of measurement of temperature of objects as well as humans. The conversion factor must be used to obtain the value of temperature in Fahrenheit scale from Celsius scale.

Complete Step By Step Answer:
Temperature is a physical quantity that is associated with heat changes that take place in a thermodynamic system and surrounding. Changes in temperature can cause significant physical changes like phase transformation that are reversible in nature. Temperature changes are also measured to classify different reactions as endothermic or exothermic reactions.
The Degree calcium scale is mostly used to state the temperature of surrounding and room temperatures. The Fahrenheit scale is mainly used to measure human body temperatures.
The melting point of water is a standard point of measurement and has values of $ {0^ \circ }C $ and $ {32^ \circ }F $ . Thus a factor of thirty two should always be added to temperature values measured in degree calcium scale. Also the ratio of both the scales is $ 9:5 $ thus the value must be multiplied by the same fraction.
The final formula of converting temperature from calcium to Fahrenheit scale is as follows:
 $ F = \left( {C \times \dfrac{9}{5}} \right) + 32 $
Putting in the value of Celsius scale in the above formula we get,
 $ F = \left( {{{20}^ \circ }C \times \dfrac{9}{5}} \right) + 32 = {68^ \circ }F $
 $ \Rightarrow $ Hence the final value of temperature is $ {68^ \circ }F $ .

Note:
The Kelvin is the absolute measurement scale of temperature. At zero Kelvin an absolute zero value of temperature is said to be achieved at which gases tend to have zero kinetic energy or thermal energy. The thermal motion of gas particles ceases to exist at this temperature.