Physics
One should not connect a number of electrical appliances to the same power socket because

this can damage the appliances due to overloading
this can damage the domestic wiring due to overloading
the appliance will not get full voltage
this can damage the electrical meter

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Physics
The Hooke's law is valid for

Entire elastic region of the stress strain curve
Entire stress strain curve
Only proportional region of the stress strain curve
Elastic as well as plastic region of the stress strain curve

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