Which technology is applied in writing data onto a CD-RW disc to allow repeated overwriting?
A. Dye ablation
B. Magnetic field reversal
C. Floating gate transistor charging
D. Phase-change alloy material
Answer: Option D
Solution (By JKSSB Mock Tests)
CD-RW discs use a phase-change material that can transition between crystalline (reflective) and amorphous (absorbent) states via laser heating to clear or write data.
Explanation:
A DVD-RAM disc typically holds 4.7 GB per side (single-layer), with double-sided versions up to 9.4 GB. But the common capacity is 4.7 GB for single-sided.
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