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Which technology is used in computer disks ?

Which technology is used in computer disks ? Correct Answer Laser

CD (Compact Disk) - এ লেজার প্রযুক্তি ব্যবহৃত হয়। CD - এর ট্র্যাকগুলো তৈরি হয় ১ - ২ মাইক্রন দৈর্ঘ্য, ০.৫ মাইক্রোন চওড়া এবং১/১০ মাইক্রোন গভীরতা বিশিষ্ট ক্ষুদ্রাকৃতির গর্ত বা পীটস্ দ্বারা।

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