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Which phenomenon limits photodiode speed improvements when measuring pulsed lasers?

A)RC time constant effects
B)Quantum tunneling probability
C)Wavefunction collapse duration
D)Electron diffraction interference

💡 Explanation

The photodiode’s speed is constrained by the RC time constant, because capacitance and resistance influence the discharge rate limiting the detector's responsiveness. Therefore, minimizing capacitance improves switching speeds, rather than relying on quantum or wave function limits.

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