Practice Light Emitting Diode (LED) - 9.4 | 9. Electronic Devices | ICSE Class 12 Physics
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9.4 - Light Emitting Diode (LED)

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Learning

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?

💡 Hint: Think about how diodes work when current flows.

Question 2

Easy

Name one application of LEDs.

💡 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

💡 Hint: Think about current flow direction.

Question 2

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

  • True
  • False

💡 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.

💡 Hint: Consider initial costs vs. long-term savings.

Question 2

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

💡 Hint: Think about how technology can enhance a user's experience.

Challenge and get performance evaluation