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MHT CET202523 Apr 2025Evening ShiftPhysicsSemiconductorsActual

I - V characteristics of photodiode for different illumination intensities I ₁, I ₂, I ₃ and I ₄ are drawn as follows. Then the maximum intensity among them is

Options

  1. AI ₁
  2. BI ₂
  3. CI ₃
  4. DI ₄

Correct answer

D. I ₄

Step-by-step solution

The photocurrent in a reverse-biased photodiode increases with illumination intensity due to enhanced electron-hole pair generation. From the I-V characteristics, the curve yielding the largest magnitude reverse current corresponds to I ₄ , indicating it represents the highest intensity. The correct choice is D .

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