Answer: The correct answer is option 3.
Explanation: Average kinetic energy is defined as the energy of motion of the particles of a system. It is a measure of Kelvin Temperature.
Mathematically,
[tex]K=\frac{3}{2}\frac{R}{N_A}T[/tex]
where,
K = kinetic energy of the molecules measured in joules.
R = Gas constant = [tex]8.314Jmol^{-1}K^{-1}[/tex]
[tex]N_A[/tex] = Avogadro's number = [tex]6.022\times 10^{23}atoms/mol[/tex]
T = Temperature in kelvins.
Kinetic energy is directly proportional to the temperature of the system.
[tex]\text{Kinetic energy}\propto \text{Temperature}[/tex]
More the temperature, more will be the kinetic energy of the molecules.
Hence, the correct answer is Option 3.
