Multiple choice

What is the size of the optical disk which is used for recording high quality music?

  1. 4.7 inch.

  2. 5 ½ inch.

  3. 3 ½ inch.

  4. 8.7 inch.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Standard Compact Discs (CDs), which were the primary optical media for high-quality music, have a diameter of 120 mm, which is approximately 4.7 inches.

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