A spanner is used to turn a nut to open or tighten it.
The rotational effect depends on the perpendicular distance between the force and the point of application of force. When we increase the perpendicular distance then the Moment of force increases keeping the moment same.
Magnification is -5: The negative magnification means the image is real and the absolute value(without negative sign) of magnification (5) indicates that the image is real and inverted.
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