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# Light The document discusses the nature of light, presenting both wave and particle theories. **Wave Theory:** * Light is a form of energy that enables us to see objects. * Light is a transverse wave that does not require a medium to travel. * It is explained by Huygen's theory, which explains...

# Light The document discusses the nature of light, presenting both wave and particle theories. **Wave Theory:** * Light is a form of energy that enables us to see objects. * Light is a transverse wave that does not require a medium to travel. * It is explained by Huygen's theory, which explains phenomena like dispersion. **Particle Theory (Corpuscular Theory):** * Light is a collection of energy packets called photons. * It is explained by the Corpuscular theory. * It explains phenomena like the photoelectric effect. **Dual Nature of Light:** * Light exhibits both wave and particle properties. * Wave theory cannot explain reflection, refraction, and interference. * Particle theory cannot explain diffraction. **Laws of Reflection:** * The angle of incidence is equal to the angle of reflection. (This is illustrated with a diagram showing the relationship between incident ray, reflected ray, and normal) * The incident ray, reflected ray, and normal all lie in the same plane. (This is illustrated in the diagram) * $L1 = Lr$ **Microwave Oven:** * Microwaves have lower frequency than visible light. * Their energy is directly delivered to water molecules. **Additional Notes:** The document also mentions other properties of light, such as reflection, refraction, and the ability of light to be seen. It also includes an equation relating the incident angle (i) to the reflected angle (r).