Besides free oscillations, the topic also treats oscillations that are damped and:
AFrozen
BSilent
CReversed
DForced
Answer & Solution
Correct answer: D. Forced
1. Real oscillations lose energy and may be driven.
2. Two further cases are therefore studied.
3. They are damped and forced oscillations.
_Source: syllabus Physics Part II, Chapter 14, Oscillations._
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