Angular motion of a CD
Think about the question below. Only one of the answers listed is correct. We'll do some (but probably not all) of these questions in the lectures when you will all be asked to vote on which answer you think is correct. (Soon afterwards, you'll be able to see your responses, and those of the whole class at EVAF.)
Information on a CD is read from the inside to the outside. If data is
read at a constant rate, then the speed of rotation of the CD when reading the
last track is
1 | 3 × that to read the first track |
2 | The same as that to read the first track |
3 | 1/3 that to read the first track |