Physics - Wave on String Question with Solution | TestHub

The end correction $e$ for a vibrating air column in a tube of radius $r$ is given by $e=0.6r$ for one open end.

This shows that the end correction is directly proportional to the radius of the tube ($e\propto r$).

Therefore, if the tube is widened, its radius increases, which in turn increases the end correction. The length of the tube does not affect the end correction.

Answer: widened.