Question

# The unit of torque is:A. $N/m$B. $Nm$C. $N/{m^2}$D. $N{m^2}$

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Hint:The torque is the rotational effect developed by force acting on the body. It is the tendency of a force to rotate a body about an axis. The torque about a point is equal to the force and the perpendicular distance between the point of application of force and the axis of rotation. Thus, using the formula of torque, we can find out the correct answer.

$Torque = Force \times Perpendicular\,distance$.
Unit of torque $= N \times m$
Thus, the unit of the torque is $Nm$ .
For example, the length of a rod is$10\;{\text{cm}}$. Here, 10 is the numerical value and cm is the unit. It also shows a comparison that the pen is 10 times $1\;{\text{cm}}$ (standard unit).