# A change in the physical state can be brought about (a) only when energy is given to the system (b) only when energy is taken out from the system

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A change in the physical state can be brought about

(a) only when energy is given to the system

(b) only when energy is taken out from the system

(c) when energy is either given to, or taken out from the system

(d) without any energy change

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(c) when energy is either given to, or taken out from the system