The compact disc is an evolution of LaserDisc technology, where a focused laser beam is used that enables the high information density required for high-quality digital audio signals.

Which technology is used in compact disc?

A. Electro Magnetic
B. Laser Technology
C. Mechanical
D. Electrical

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What is the shortcut key for hyperlink on Ms word?

A .  CRT+H B .   CRT+I C .   CRT+K D   CRT+T

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