Practice Light Emitting Diode (LED) - 9.4 | Chapter 9: Electronic Devices | ICSE Class 12 Physics
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Academics
Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Professional Courses
Games

Interactive Games

Fun, engaging games to boost memory, math fluency, typing speed, and English skillsβ€”perfect for learners of all ages.

games

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What state must an LED be in to emit light?

πŸ’‘ Hint: Think about how diodes work when current flows.

Question 2

Easy

Name one application of LEDs.

πŸ’‘ Hint: Consider where you've seen colored lights.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What bias does an LED require to function?

  • Forward Bias
  • Reverse Bias
  • Both

πŸ’‘ Hint: Think about current flow direction.

Question 2

True or False: LEDs can be used in traffic lights.

  • True
  • False

πŸ’‘ Hint: Consider where you've seen bright lights.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Evaluate the benefits of implementing LEDs over traditional incandescent bulbs in a municipal lighting project.

πŸ’‘ Hint: Consider initial costs vs. long-term savings.

Question 2

Design a new product that integrates LEDs for energy savings and aesthetic appeal.

πŸ’‘ Hint: Think about how technology can enhance a user's experience.

Challenge and get performance evaluation