Final answer:
The statement that optical discs use tiny pits and lands burned by a laser for data storage is true. This process allows for large storage capacities and is enhanced by using lasers with shorter wavelengths, such as blue lasers for Blu-Ray discs as opposed to infrared lasers for CDs.
Step-by-step explanation:
Optical discs such as CDs and Blu-Ray discs store digital information using tiny pits and lands that are burned by a laser. The assertion that these pits and lands are used for data storage is true. A laser creates these microscopic pits in the disc's surface during the manufacturing process. The areas between the pits are called lands. When the disc is read, a laser beam scans the surface; light is scattered differently by the pits than by the lands, which allows a sensor to convert the physical pattern of pits and lands into a digital code.
The large information capacity of these optical discs is due to the precision with which the laser is able to create the pits, paired with the disc's ability to be read accurately. Technology has evolved to use lasers with shorter wavelengths, such as blue lasers for Blu-Ray discs, which permits more pits to be closer together and significantly increases storage capacity compared to CDs, which use infrared lasers.