OPTICS / LIGHT
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Q: What is optics?
A: A branch of physics that studies light and how it behaves.
Q: What is light?
A: A form of energy that lets us see and travels as waves and particles.
Q: Natural sources of light?
A: Sun, lightning, meteors.
Q: Artificial sources of light?
A: Candle, flashlight, lamp.
Q: Wave theory of light (simple)?
A: Light acts like a wave. Example: Rainbows, interference.
Q: Corpuscular (particle) theory of light?
A: Light is made of tiny particles. Explains: Reflection and refraction.
Q: Quantum theory of light?
A: Light behaves as particles with probabilities. Example: Solar panels.
Q: Rectilinear propagation of light?
A: Light travels in straight lines.
Q: Reflection of light?
A: Light bounces off a surface.
Q: Refraction of light?
A: Light bends when it enters a new medium.
Q: Diffraction of light?
A: Light bends around edges or small openings.
Q: Interference of light?
A: Light waves overlap to make bright or dark areas.
Q: Dispersion of light?
A: White light splits into colours. Example: Rainbow, prism.
Q: Polarization of light?
A: Light vibrates in one direction. Example: Polarized sunglasses.
Q: Speed of light?