Which of the following principle is used to produce ''low-temperatures' ? Options: A . &nbspSuper conductivity B . &nbspJoule-Kelvin effect C . &nbspThermo-electric effect D . &nbspAdiabatic demagnetisation

Which of the following principle is used to produce ''low-temperatures' ?

Question

Which of the following principle is used to produce ''low-temperatures' ?

Options:

A . Super conductivity

B . Joule-Kelvin effect

C . Thermo-electric effect

D . Adiabatic demagnetisation

Answer: Option D

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