[amp_mcq option1=”74 mins” option2=”56 mins” option3=”60 mins” option4=”90 mins” correct=”option3″]<\/p>\n
The correct answer is C. 60 mins.<\/p>\n
A compact disc (CD) is an optical disc data storage format. It was originally developed to store and play digital audio, but it can also be used to store other data such as computer files. CDs are read by a laser, which scans the disc’s surface and converts the data into an electrical signal.<\/p>\n
The original CD specifications called for a capacity of 74 minutes of audio. However, this was later reduced to 60 minutes in order to make CDs more compatible with existing audio equipment.<\/p>\n
Option A is incorrect because it is the capacity of a CD-Extra disc, which is a type of CD that can store up to 80 minutes of audio.<\/p>\n
Option B is incorrect because it is the capacity of a CD-R disc, which is a type of CD that can be recorded once.<\/p>\n
Option D is incorrect because it is the capacity of a DVD, which is a type of disc that can store up to 170 minutes of audio.<\/p>\n","protected":false},"excerpt":{"rendered":"
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