Topic Details (Notes format)

Dual Nature of Matter and Radiation

Subject: General Science

Book: NCERT Physics Class 12

Particles exhibit both wave and particle properties.
- **Photoelectric Effect**:
- Einstein’s explanation.
- **de Broglie Hypothesis**:
- Matter waves.
- **Heisenberg’s Uncertainty Principle**:
- Limits of measurement.

**Possible Exam Questions:**
1. State Einstein’s photoelectric equation.
2. Derive de Broglie’s wavelength formula.
3. What is Heisenberg’s Uncertainty Principle?
4. How does the wave-particle duality explain quantum behavior?
5. Explain the experimental verification of de Broglie waves.

Practice Questions

Which type of radiation has the shortest wavelength?

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What type of energy is stored in a stretched rubber band?

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Which gas is commonly used in balloons to make them float?

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What is the main function of the ozone layer?

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Which organ is responsible for detoxifying harmful substances in the human body?

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Which metal is liquid at room temperature?

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Which gas is used in the process of welding?

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Which process separates light into its component colors?

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What is the smallest unit of life?

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