It is a spiral layout
Head – The device that reads and writes the information—magnetic or optical—on the disk surface.
Optical storage device
No, its not an optical storage device.
It is not an optical device. C D ROM or DVD are optical devices. Whereas a digital memory card is solid state device.
Light pen is a mechanical or optical device? i don't know answer for this
magnetic storage device
CD-R
Use a pinhole or a dark-filtered optical device to project the sun's image on a light surface,and view the image.
Input device
Optical equipment is any device that uses light to perform its function.
A track on a storage device typically consists of multiple sectors. The exact number of sectors on a track can depend on the specifications of the device, but it is typically in the range of a few hundred to a few thousand sectors per track.
A device to measure optical refraction.