Class 11Physics10-1.Thermometry, Thermal Expansion and CalorimetryTemperature and Temperature scales
EasyIs a negative value on the Kelvin scale possible? Why?
(NO) No,a negative value on the Kelvin scale is not possible.
According to the kinetic theory of gases,the temperature of a system is directly proportional to the average kinetic energy of its molecules.
The absolute zero temperature $(0 \ K)$ corresponds to the state where the kinetic energy of the molecules becomes zero,meaning all molecular motion ceases.
Since kinetic energy cannot be negative,the temperature on the Kelvin scale cannot be less than $0 \ K$.
According to the kinetic theory of gases,the temperature of a system is directly proportional to the average kinetic energy of its molecules.
The absolute zero temperature $(0 \ K)$ corresponds to the state where the kinetic energy of the molecules becomes zero,meaning all molecular motion ceases.
Since kinetic energy cannot be negative,the temperature on the Kelvin scale cannot be less than $0 \ K$.
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The temperature on a Fahrenheit temperature scale that is twice the temperature on a Celsius temperature scale is: (in $^{\circ} F$)
The electrical resistance in ohms of a certain thermometer varies with temperature according to the approximate law:
$R = R_{0} [1 + \alpha (T - T_{0})]$
The resistance is $101.6 \; \Omega$ at the triple-point of water $(273.16 \; K)$,and $165.5 \; \Omega$ at the normal melting point of lead $(600.5 \; K)$. What is the temperature (in $K$) when the resistance is $123.4 \; \Omega$?
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