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NEET2026PhysicsChapterActual

Consider the following statements (A) and (B) and identify the correct answer. (A) In a half-wave rectifier, the fundamental frequency of the output ripple voltage is twice the input frequency. (B) When a p-n junction diode is forward biased, the width of the depletion layer decreases.

Options

  1. ABoth (A) and (B) are correct.
  2. BBoth (A) and (B) are incorrect.
  3. C(A) is correct and (B) is incorrect.
  4. D(A) is incorrect but (B) is correct.

Correct answer

D. (A) is incorrect but (B) is correct.

Step-by-step solution

In a half-wave rectifier, the output frequency is equal to the input frequency. Therefore, the fundamental frequency of the output ripple voltage is the same as the input frequency. Statement (A) is incorrect. When a p-n junction diode is forward biased, the applied voltage opposes the built-in potential barrier. This reduces the effective potential barrier and decreases the width of the depletion layer. Statement (B) is correct. Thus, (A) is incorrect but (B) is correct. Answer: (A) is incorrect but (B) is correct

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