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← ScienceWhich consequence results when high-frequency resonance within a microwave cavity magnetron shifts?
A)Power output is reduced✓
B)Cathode current shows saturation
C)Anode efficiency sees improvement
D)Internal magnetic field stabilizes
💡 Explanation
Reduced power output occurs because frequency shift detunes the cavity from amplifying microwaves efficiently; this de-tuning disrupts constructive interference which relies on resonant behavior. Therefore power reduces, rather than increasing anode efficiency or stabilizing because of off-resonant behaviour.
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