Physics, asked by nabilamaryam5095, 4 months ago

which type of lens is used in scanner

Answers

Answered by annshshetty
0

Answer:

A lamp is used to illuminate the document. The lamp in newer scanners is either a cold cathode fluorescent lamp (CCFL) or a xenon lamp, while older scanners may have a standard fluorescent lamp. The entire mechanism (mirrors, lens, filter and CCD array) make up the scan head.

Scanning is a reading technique to be used when you want to find specific information quickly. In scanning you have a question in your mind and you read a passage only to find the answer, ignoring unrelated information

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