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Semiconductor Electronics

JEE Main 2025 (Online) 24th January Morning ShiftMCQEasy📈 Topic in 21% papers+4−1
Ques. 1JEE Main 2025, 24 January (Morning Shift)

Consider the following statements : Choose the correct answer from the options given below :

  1. A, C, E Only
  2. B, E Only
  3. A, C Only
  4. B, D, E Only

Answer

(2) B, E Only

Solution

A : a solar cell has a large junction area (to absorb more light)

B : it works without external bias

C : an LED junction is heavily doped

D : intensity saturates at high current

E : an LED emits only in forward bias

B and E

Answer: (2)

Keep practising — Semiconductor Electronics

Ques. 2JEE Main 2025, 24 January (Evening Shift)

The output of the circuit is low (zero) for : [figure] Choose the correct answer from the options given below :

  1. (A), (B) and (C) only
  2. (A), (C) and (D) only
  3. (B), (C) and (D) only
  4. (A), (B) and (D) only
Ques. 3JEE Main 2025, 23 January (Evening Shift)

What is the current through the battery in the circuit shown below? [figure]

  1. 1.5 A
  2. 0.25 A
  3. 1.0 A
  4. 0.5 A
Ques. 4JEE Main 2025, 22 January (Morning Shift)

Which of the following circuits represents a forward biased diode? [figure] Choose the correct answer from the options given below:

  1. (C) and (E) only
  2. (A) and (D) only
  3. (B), (D) and (E) only
  4. (B), (C) and (E) only
Ques. 5JEE Main 2025, 22 January (Evening Shift)

[figure] To obtain the given truth table, following logic gate should be placed at G :

  1. NOR Gate
  2. OR Gate
  3. AND Gate
  4. NAND Gate

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