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JEE-MAIN SERIES
Physics

P N Junction

7 previous year questions.

Volume: 7 Ques
Yield: Medium

High-Yield Trend

1
2024
2
2023
3
2022
1
2017

Chapter Questions
7 MCQs

01
PYQ 2017
medium
physics ID: jee-main
The current gain of a common emitter amplifier is . If the emitter current is , collector current is :
1
9.6 mA
2
6.9 mA
3
0.69 mA
4
69 mA
02
PYQ 2022
hard
physics ID: jee-main

In the given circuit the input voltage Vin is shown in figure. The cut-in voltage of p–n junction diode
(D1 or D2) is 0.6 V. Which of the following output voltage (V0) waveform across the diode is correct?

1
2
3
4
03
PYQ 2022
medium
physics ID: jee-main
The photodiode is used to detect the optical signals. These diodes are preferably operated in reverse biased mode because:
1
fractional change in majority carriers produce higher forward bias current.
2
fractional change in majority carriers produce higher reverse bias current.
3
fractional change in minority carriers produce higher forward bias current.
4
fractional change in minority carriers produce higher reverse bias current.
04
PYQ 2022
easy
physics ID: jee-main
In the circuit shown below, maximum Zener diode current will be ________ mA.
circuit for maximum Zener diode current
05
PYQ 2023
medium
physics ID: jee-main

Given below are two statements ; one is labelled as Assertion and the other is labelled as Reason

Assertion A: Photodiodes are used in forward bias usually for measuring the light intensity

Reason R: For a p-n junction diode at applied voltage the current in the forward bias is more than the current in the reverse bias for where is the threshold voltage and is the breakdown voltage

In the light of the above statements, choose the correct answer from the options given below

1
A is true but is false
2
A is false but is true
3
Both and are true but is NOT the correct explanation
4
Both and are true and is correct explanation
06
PYQ 2023
medium
physics ID: jee-main
Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: Diffusion current in a p-n junction is greater than the drift current in magnitude if the junction is forward biased.
Reason R: Diffusion current in a p-n junction is from the n-side to the p-side if the junction is forward biased.
In the light of the above statements, choose the most appropriate answer from the options given below
1
Both A and R are correct and R is the correct explanation of A
2
Both A and R are correct but R is NOT the correct explanation of A
3
A is correct but R is not correct
4
A is not correct but R is correct
07
PYQ 2024
hard
physics ID: jee-main
When a potential difference V is applied across a wire of resistance R, it dissipates energy at a rate W. If the wire is cut into two halves and these halves are connected mutually parallel across the same supply, the same supply, the energy dissipation rate will become:
1
2
3

4W

4
2W

About P N Junction - JEE-MAIN

P N Junction is a vital chapter for JEE-MAIN aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.

By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.

Frequently Asked Questions

Why focus on P N Junction PYQs?

Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.

How to best use this analysis?

Review the topic breakdown to see which sub-topics within P N Junction carry the most weight. Then, tackle the questions iteratively to solidify your understanding.