alleryA satellite dish uses a parabolic reflector because:
AParabolas have two foci giving system redundancy
BParabolas resist wind better than circle shapes
CParabolas reflect all light back to its source
DParallel rays reflect through the focus (receiver)
Answer & Solution
Correct answer: D. Parallel rays reflect through the focus (receiver)
**PARABOLIC REFLECTOR PROPERTY:** all parallel rays (from a distant satellite) hitting a parabolic dish reflect THROUGH THE FOCUS.
The receiver is placed at the focus to collect the signal.
**Same principle:** car headlights, flashlights.
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