[amp_mcq option1=”polarized light” option2=”unpolarized concentric light” option3=”laser” option4=”coloured light E. None of the above” correct=”option3″]<\/p>\n
The correct answer is C. laser.<\/p>\n
A laser is a beam of light that is produced by a process called stimulated emission. This process occurs when atoms or molecules are excited to a higher energy state by an external source, such as a flash lamp or an electrical discharge. When these atoms or molecules decay back to their ground state, they emit light in a very specific direction and with a very specific wavelength. This light is called laser light.<\/p>\n
Laser light is used in a variety of applications, including recording and retrieving data on optical disks. In this application, the laser light is used to create a pattern of pits and bumps on the surface of the disk. This pattern is then read by a laser scanner to retrieve the data.<\/p>\n
The other options are incorrect. Polarized light is light that has been aligned in a specific direction. Unpolarized concentric light is light that is emitted in a circular pattern. Colored light is light that has a specific wavelength.<\/p>\n","protected":false},"excerpt":{"rendered":"
[amp_mcq option1=”polarized light” option2=”unpolarized concentric light” option3=”laser” option4=”coloured light E. None of the above” correct=”option3″]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[727],"tags":[],"class_list":["post-56522","post","type-post","status-publish","format-standard","hentry","category-computer-fundamental-miscellaneous","no-featured-image-padding"],"yoast_head":"\n