Question

# Why is it impossible to reach $0Kelvin$?

Open in App
Solution

## It is impossible to reach $0K$ because:Zero kelvin $\left(-273.15C\right)$, also known as absolute zero is the lowest temperature possible on the kelvin scale which is physically unattainable. Nothing can be colder than $0K$ on the kelvin scale.According to the third law of thermodynamics, “ A system has $0$ entropy at $0K$ if and only if the system is in the pure state.” Since a system can not avoid $100%$ interaction with the environment and always exchange energy with the surroundings, it is impossible to achieve $0K$temperature.Also, according to Heisenberg's uncertainty principle, “Reaching $0K$ means there is no particle moving, which implies that the system is in a state where we can know the momentum and position of the particle at the same time, which is not possible.”So $0K$ cannot be attained.Hence, it is impossible to reach $0K$.

Suggest Corrections
6
Join BYJU'S Learning Program
Select...
Related Videos
Temperature
PHYSICS
Watch in App
Explore more
Join BYJU'S Learning Program
Select...