Pick up the incorrect statement from the following: The torsional resistance of a shaft is directly proportional to________?

Depth or height of the arch is the________?

What refers to the amount of money paid for the use of borrowed capital?

In the plate loading test for determining the bearing capacity of soil, the size of square bearing plate should be________?

As per IRC recommendations, the average level of illumination on important roads carrying fast traffic is________?

A particle inside a hollow sphere of radius r, having coefficient of friction -rr can rest upto height of________?