Question

is making food considered as work done acc. to physics?

Answer 1

Answer:

Work, in physics, measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement.  If the force is being exerted at an angle θ to the displacement, the work done is W = fd cos θ.

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Answer 2

Answer:

if we take the room in which the lady is cooking and describe it as the system and examines whether she works or not, the answer is no. As then, all the forces would be considered as internal forces and thus the system wouldn't do any work.