List of contents

Question 1

The following figure shows a spiral tube lying flat on a table, seen from above.

A ball enters the tube with a sufficiently high velocity to emerge from the other end. What path does it take when it comes out of the tube?

A

B

C

Average of correct answers: = 60%

Comment:

This is the second easiest item, which is astonishing. In another published tests this item scored much lower.

Next time I would exclude this item because most students know about it.