Data is stored on optical discs as pits and lands.
Name the component in an optical disc drive that reads this data.
Mark scheme
Award one mark for:
- Laser (1)
Allow laser beam
Do not accept read/write head
Do not accept pits
Do not accept lands
Do not accept reflective surface
Do not accept magnet/magnetic
Example answers and how they were marked
Full marks1/1
Laser
Why: Laser is the creditworthy answer (1).
No marks0/1
A read/write head
Why: Read/write head is not accepted by the mark scheme; it reads magnetic media, not optical discs, so no marks are awarded.
No marks0/1
Pits and lands
Why: Pits and lands are what the laser reads, not the component that reads the data, so the mark scheme does not accept them.