Final answer:
The medical device that emits a concentrated beam of light to cut and coagulate tissues is the laser, which is distinct from cobalt-60 machines that deliver focused radiation but also target specific areas like tumors.
Step-by-step explanation:
The device that provides a ray of concentrated beam of light capable of cutting and coagulating tissues is the laser. This is a tool commonly used in various medical procedures, including surgery to remove cancerous tissues. Lasers deliver high-intensity light that can be precisely focused on small areas to cut through tissue or seal blood vessels, which helps to minimize bleeding.
In medical applications such as the treatment of cancer, cobalt-60 machines are also used to focus radiation on targeted regions like tumors, this method is different from the use of lasers as it utilizes high-energy radiation rather than a concentrated beam of light. However, the principle of targeting a specific area is common to both treatments. Autoclaves, on the other hand, are used for sterilizing equipment and samples.