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# Unit 2: Why light and matter are two faced!

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## About this unit

Our gateway into the quantum realm.

### Practice

- Wave theory predictionsGet 3 of 4 questions to level up!

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### Practice

- Intensity and power (photon picture)Get 3 of 4 questions to level up!
- Predictions of the photon picture (PPP)Get 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

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### Practice

- Kinetic energy of emitted electronsGet 5 of 7 questions to level up!
- Einstein's photoelectric equationGet 5 of 7 questions to level up!

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### Practice

- Photoelectric effect: positive collectorGet 3 of 4 questions to level up!
- Photoelectric effect: negative collectorGet 3 of 4 questions to level up!
- Effect of intensity and frequencyGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

### Learn

### Practice

- Stopping potential v/s frequencyGet 3 of 4 questions to level up!
- Einstein's photoelectric equation (intermediate)Get 3 of 4 questions to level up!

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### Practice

- de Broglie wavelengthGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

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Level up on all the skills in this unit and collect up to 1,100 Mastery points!