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West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Physics Set 02 (Advanced Level) English Medium 100% Free Practice Test

West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Physics: Electronic Devices Online Test (Set 02 (Advanced Level))

Electronic Devices — Set 02 (Advanced Level)

Practise free online CBT mock test for West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Physics Chapter 9 'Electronic Devices'. 20 MCQs, 20-minute timer, instant scorecard, and step-by-step solutions aligned with official board syllabus.

📝
20 MCQs
Questions
⏱️
20 Mins
Duration
🎯
20 Marks
Total Marks
➕
+1.0
Per Correct
🛡️
0.0
Negative Mark
🌐
English
Language
Start Test Now (English Medium)
Instant Scorecard Step-by-Step Solutions WBCHSE HS Syllabus Pattern

Chapter Study Guide & In-Depth Notes

Master the key concepts, vocabulary, and high-yield questions before starting the test.

3 Sections

Chapter Overview & Core Concepts: Electronic Devices

Class 12 Study Guide

Mastering Electronic Devices in Class 12 provides critical subject intuition, analytical skills, and examination readiness.

Examinations test fundamental principles, definitions, cause-and-effect reasoning, and real-world applications under timed conditions.

Core Moral & Key Takeaway:

Grasping core concepts and practicing with timed chapter-wise CBT tests guarantees top performance in board exams.

Key Terminology, Definitions & Principles

Glossary & Concepts
Term / Formula Type Definition / Meaning Explanation / Notes Example / Usage
Core Concept Principle Primary concept governing Electronic Devices. मुख्य सिद्धांत "Understand and apply the principle accurately."
Analytical Deduction Skill Evaluating evidence to draw correct conclusions. तार्किक विश्लेषण "Examine question clues systematically."

Key Features & Devices Explored:

Systematic Elimination
Eliminate distractor choices before selecting the best answer.
Pacing & Accuracy
Complete each question within 60 seconds to maintain steady momentum.

High-Yield Revision Points & Solved Board Exam Q&A

Revision Notes
⚡ High-Yield Exam Takeaways:
  • Review all key textbook terms, definitions, and formulas.
  • Pay attention to units, boundary values, and key keywords in questions.
  • Solve Foundation Set 01 to build confidence, followed by Advanced Set 02 for exam excellence.
Frequently Asked Questions & Model Answers:
Q1 How should students prepare for Electronic Devices exams?
Answer: Read the chapter thoroughly, practice step-by-step solved examples, memorize key definitions, and evaluate preparation using timed online CBT mock tests.

Sample Questions Preview

Free Sneak Peek

Here is a sneak peek of the questions included in this test set. Test your preparation by viewing the answer and detailed explanation before starting the timed exam.

Q1
What is the Law of Mass Action in semiconductor physics relating intrinsic carrier concentration n_i, electron concentration n_e, and hole concentration n_h at thermal equilibrium?
তাপীয় সাম্যাবস্থায় অর্ধপরিবাহীর নিজস্ব বাহক ঘনত্ব n_i, ইলেকট্রন ঘনত্ব n_e এবং হোল ঘনত্ব n_h-এর মধ্যে ভরক্রিয়া সূত্র (Law of Mass Action) কোনটি?
थर्मल संतुलन पर आंतरिक वाहक एकाग्रता n_i, इलेक्ट्रॉन एकाग्रता n_e, और छेद एकाग्रता n_h से संबंधित अर्धचालक भौतिकी में द्रव्यमान क्रिया का नियम क्या है?
A
\(n_e + n_h = n_i\)
B
n_e
C
n_e · n_h = n_i^2 (constant at a given temperature)n_e · n_h = n_i^2 (নির্দিষ্ট তাপমাত্রায় ধ্রুবক)n_e · n_h = n_i^2 (किसी दिए गए तापमान पर स्थिर)
D
n_e · n_h = 2 n_i
Correct Answer: Option C
Explanation:
The Law of Mass Action states that the product of electron and hole concentrations is constant at a given temperature: n_e·n_h = n_i^2 in both intrinsic and extrinsic semiconductors.
ভরক্রিয়া সূত্রানুসারে যেকোনো অপদ্রব্য ডোপিং সত্ত্বেও নির্দিষ্ট তাপমাত্রায় n_e·n_h = n_i^2 ধ্রুবক থাকে।
द्रव्यमान क्रिया का नियम बताता है कि इलेक्ट्रॉन और छिद्र सांद्रता का उत्पाद किसी दिए गए तापमान पर स्थिर होता है: आंतरिक और बाह्य अर्धचालक दोनों में n_e·n_h = n_i^2।
Q2
What is the total electrical conductivity σ of an extrinsic semiconductor with electron mobility μ_e and hole mobility μ_h?
ইলেকট্রন সচলতা μ_e এবং হোল সচলতা μ_h বিশিষ্ট অর্ধপরিবাহীর মোট তড়িৎ পরিবাহিতাঙ্ক σ-এর সমীকরণ কোনটি?
इलेक्ट्रॉन गतिशीलता μ_e और छिद्र गतिशीलता μ_h के साथ एक बाह्य अर्धचालक की कुल विद्युत चालकता σ क्या है?
A
σ = e · (n_e · μ_e + n_h · μ_h)σ = ई · (एन_ई · μ_ई + एन_एच · μ_एच)
B
σ = e · (n_e · μ_e - n_h · μ_h)σ = ई · (एन_ई · μ_ई - एन_एच · μ_एच)
C
σ = e · μ_e · μ_hσ = ई · μ_e · μ_h
D
σ = (n_e + n_h)
Correct Answer: Option A
Explanation:
Current is carried by both electrons and holes: J = σE = (J_e + J_h) = e(n_e μ_e + n_h μ_h)E ⟹ σ = e(n_e μ_e + n_h μ_h).
অর্ধপরিবাহীতে মোট কারেন্ট ইলেকট্রন ও হোল উভয়ের দ্বারা পরিবাহিত হওয়ায় পরিবাহিতাঙ্ক σ = e(n_e μ_e + n_h μ_h)।
धारा इलेक्ट्रॉनों और छिद्रों दोनों द्वारा प्रवाहित होती है: J = σE = (J_e + J_h) = e(n_e μ_e + n_h μ_h)E ⟹ σ = e(n_e μ_e + n_h μ_h)।

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How Chapter-Wise Online CBT Tests Build Winning Habits for Future Competitive Exams

Focused chapter-wise CBT practice builds the speed, mental stamina, and analytical discipline required to ace CUET, JEE Main, NEET UG, NDA, CA Foundation, and College Entrance Exams.

Competitive Edge

Real-Time Clock Awareness & Pacing

समय प्रबंधन एवं गति नियंत्रण

In school examinations, students write answers without active pacing. In national entrance tests, students have barely 45-60 seconds per MCQ. Practicing with a 20-minute timer instills instinctive time-budgeting and prevents last-minute exam panic.

Mastery of the Elimination Technique

विकल्प निष्कासन विधि में दक्षता

Top rankers in competitive exams rarely compute every problem blindly. They spot subtle traps, evaluate extreme values, and eliminate 2 out of 4 distractors within seconds. Our 4-option sets teach critical distractor analysis.

CBT Screen Stamina & Digital Comfort

कंप्यूटर आधारित परीक्षा का सहज अभ्यास

Almost all major national exams (CUET, JEE, NEET, SSC, Banking) are 100% computer-based. Students who only study on paper experience eye strain and navigation mistakes on exam day. Early CBT practice creates effortless digital fluency.

Immunity to Negative Marking

सटीकता और नकारात्मक अंकन से सुरक्षा

Careless errors—such as misreading "NOT" or "EXCEPT"—ruin thousands of competitive aspirations each year. Regular objective testing builds the habit of double-checking question keywords before locking answers.

Instant Diagnostic Feedback Loop

तत्काल त्रुटि निवारण एवं आत्म-मूल्यांकन

Traditional paper tests take weeks to grade, by which time the student has forgotten their thought process. TargetExams provides instant scorecards and step-by-step solutions while the conceptual puzzle is still fresh.

Start Building Your Competitive Edge from Class

Develop speed, accuracy, and digital test-taking confidence with chapter-wise 20-minute mocks.

Syllabus Concepts Evaluated in this Chapter

This test series specifically evaluates the core competencies and learning objectives outlined in the official syllabus:

  • Core definitions, fundamental theorems, and essential concepts of this chapter.
  • Step-by-step mathematical reasoning and deductive problem-solving.
  • Application of standard formulas and operations in real-world scenarios.
  • Critical examination of common exam pitfalls and misleading options.
  • Higher-order thinking skill (HOTS) questions to prepare for school examinations.
  • Speed and accuracy mastery under standard timed CBT exam conditions.

Exam Rules & Test Taking Guidelines

  • Total Questions: The test consists of exactly 20 objective type questions.
  • Time Allowed: 20 Minutes countdown timer begins as soon as the test launches.
  • Marking Scheme: +1.0 mark is awarded for each correct answer.
  • Zero Penalty: There is 0.0 negative marking for incorrect or unattempted questions.
  • Question Palette: Freely navigate between questions and flag questions for later review.
  • Review & Solutions: Access instant scorecard and full step-by-step solutions upon submission.

Frequently Asked Questions (FAQs)

Yes! Foundation Practice Set 01 for every chapter in West Bengal Council of Higher Secondary Education (WBCHSE) Class 12 (Higher Secondary) Physics is 100% free to attempt. Students can test their preparation without any subscription or payment.
This test strictly follows the official West Bengal Council of Higher Secondary Education (WBCHSE) syllabus and curriculum for Class 12 (Higher Secondary), covering textbook concepts, formulas, and board-standard MCQs for Chapter 9.
This dedicated test page is conducted in English Medium. If you prefer taking the test in Bengali or Hindi, you can switch using the language switcher bar at the top or toggle languages during the exam.
The test comprises 20 MCQs to be completed in 20 minutes. Each question carries +1.0 mark for a correct response, and there is 0.0 negative marking for incorrect or unattempted questions.
Yes! Instantly after submitting your test, you receive a comprehensive digital scorecard with accuracy analysis, time breakdown, and step-by-step verified explanations for all 20 questions.

Practice Sets in this Chapter

Set 01 (Foundation)

20 MCQs • 20 Mins
View

Set 02 (Advanced)

20 MCQs • 20 Mins
Current

More Chapters in this Subject

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Electronic Devices (Set 02 (Advanced Level))
20 MCQs • 20 Mins • 100% Free Practice Test

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