The [[1]] force will be greater between the heavier box and the surface than between the light box and the surface.

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Detailed Solution

The frictional force will be greater between the heavier box and the surface than between the light box and the surface.
Force is an external agent capable of changing a body's state of rest or motion. Force applied to an object is directly proportional to its mass of it. The greater the mass greater the applied force for pushing the object, and the smaller the mass, the smaller the force applied for pushing the object. Here heavier box contains a greater mass. Hence, we have to apply greater force to push the heavier box.
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